2.1. Seed quality evaluation 2.1.1. Mechanical damage Three replications of 100 seeds were soaked in 1% sodium hypochlorite solution for 10 min. The seeds with seed coat damage swelled visibly and were counted using a hand lens. The split (%) was obtained by passing 200 g of seed through a 4.00mm round hole sieve. The material that passed through the sieve was termed as ‘‘splits’’ and then weighed (Anonymous, 1985). 2.1 豆种质量评估2.1.1机械损伤经过3遍流程的100颗豆种在1%的漂白液中浸泡10分钟。种子以及种皮的很明显地膨胀损坏可以通过手持透镜观测到。 破裂指数通过200g的种子经4毫米圆洞筛网筛选得到。通过筛网的原料被称作“破裂”然后称重。2.1.2. Germination test Germination ability was determined according to the Association of Official Seed Analysts (Anonymous, 1981). Three replications of 100 seeds were placed in presoaked germination paper and were then placed in a seed germinator at 251C for 7 days. After 7 days, the percentage of seeds germinating normally was recorded. 2.1.2 发芽力检测发芽能力是按照官方的种子专家学会去定义的。经过3次流程的100颗豆种被放置在发芽试纸上预浸,人后在发芽力检测仪上以251C的温度放置7天。 7天之后, 发芽种子的比例被记录下来。2.1.3. Seed vigor The seed vigor tests were conducted according to the International Seed Testing Association (ISTA) method (Anonymous, 1985). Sheets of paper towel with 350 seeds were kept in a seed germinator at 251C for 7 days. After 7 days, the lengths of germinated seedlings were measured in centimeters. The vigor index was calculated as vigor index ¼ 1 NX germination ð%Þ seedling length ðcmÞ; where N is the number of seeds that germinated. 2.1.3 种子的活力种子活力的检测是按照国际种子检测协会的步骤操作的。350颗豆种放在纸巾上,在种子发芽力检测仪器内以251C的温度保存7天, 7天之后, 以厘米为单位去测量种芽的长度。活力指数是按照vigor index ¼ 1 NX germination ð%Þ seedling length ðcmÞ; where N is the number of seeds that germinated.(此处由于有乱码, 无法翻译)2.1.4. Accelerated aging This test was used to predict the storage potential of seed. It combines the stresses caused by high temperature and high humidity to which seed maybe exposed. It is expected that the seed lots which record a higher level of germination in the accelerated aging test can be stored for a longer period than others. Two replications of 50 seeds were kept in perforated plastic boxes. These boxes were kept at 401C and at 100% relative humidity(r :h:) for 96 h. The germination of these lots was recorded as outlined by the ISTA (Anonymous, 1985). 2.1.4加速老化这个检测是用作预告种子的储存潜力的。 它包括也许种子露天放置时,由高温度和高湿度造成的作用。人们预计在发芽力检测中有高记录的那批种子能够在加速老化测验中比其它的种子储存的更久。经过2次流程的50颗种子保存在穿孔的盒子当中。这些盒子被放置在401C温度及100%相对湿度中96个小时。这批的发芽力被ISTA作为要点记录下来。2.2. Determination of moisture content The standard oven method outlined by the ISTA (Anonymous, 1985) was employed. Three replications of 10 g seed were kept in a hot air oven at 1021C for 24 h. At the end of this period, the samples were transferred to a desiccator for cooling. The samples were then weighed and moisture content calculated on a dry mass basis. 2.2 含水量的定义ISTA大纲中的标准加热程序被引用到这里。经过3次流程的10g豆种被保存在干烤箱中以1021C的温度放置24小时。 在检测最后, 样品被转移到干燥器中冷却。然后样品称重,并计算含水量,按照折干计算。2.3. Evaluation of damage due to free-fall To determine the effect of height of fall on the seed quality, three replications of 100 seeds, drawn from each treatment, were dropped from a height of 0.5, 1.0, 1.5, or 2.0m on to a cement floor or a galvanized iron floor. The dropped seeds were tested for germination and vigor as before. 2.4. Statistical analysis of data The data collected during the experiments were analyzed using ANOVA (Anonymous, 1992) to study the effects of m:c:; process stages and heights of free-fall on the parameters of seed quality. The differences in means were examined using the Tukey test of significance.2.3 由自由下落造成损失的评估为了确定下落高度对种子质量造成的影响, 经过3遍流程的100颗种子, 分别从0.5, 1.0, 1.5, 2.0米处下落到水泥地或者镀锌铁板上,象以前一样,下落的种子被检测种子发芽力以及活力。2.4数据统计分析使用ANOVA分析了在实验当中所收集的数据,研究了含水量,加工平台以及自由下落的高度参数在种子质量方面的影响。检测方式的差异已被Tukey test of significance.验证。
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Full mechanization of rice production technologyAbstract The Application of plasma from the seeds and simple plastic tray nursery, paddy rotary mechanized and mechanized planting site preparation, field management, mechanical harvesting, the introduction of the full mechanization of rice production technologies that increase production of rice provided for reference. Keywords: Rice; full mechanization; production technology Rice is one of China's major food crops. To stabilize and increase rice production capacity, promote rice yield, income and efficiency of the section, should vigorously promote the use of full mechanization of rice production technology. A plasma seed treatment technology Plasma seed treatment technology, is the national "863" scientific research, for domestic initiative, an original innovation, reached the international advanced level in the same area. DL-2-based plasma seed processor, using high-pressure arc plasma and the combination of alternating electromagnetic field , the formation of the universe in the plasma environment inside the machine, vertical seed flow through the free fall machine, receiving light radiation, electromagnetic radiation and the combined effect of ozone, the vitality of seeds is activated, the virus is killed, ion exchange capacity increased, the enzyme conversion speed, soluble sugar and soluble protein increases, increase seed germination potential, germination rate, seedling ahead 1 ~ 3 d, increase drought resistance of crops, disease resistance. rhizobia increased the effective promotion of the late crop growth. Plant stout, growth strong increase effective tillering, promote early, improve quality, can increase the yield of 8 to 12%. Rice seeds with DL-2-based plasma seed processor treatment, current intensity should be 1.0 A, continuous processing 2. Processing within 5 ~ 12 d after sowing. Plasma can not do the descendants of the seed crop seeds. Treatment Sowing the seeds can not be repeated more than treatment, can not handle the seeds have germinated. 2 simple plastic tray seedling technology 2.1 Chuangtu prepared The best selection of mountain peat, followed by paddy field soil and dry soil; with soil quantity: the number of breeding decisions based on the amount of use of land, generally each plate Chuangtu 4 kg; paddy soil and upland soil should be added to amount to do Chuangtu peat, soil and peat were mixed with a 4:1 ratio [1]. 2.2 Chuangtu preparation Added nutritive soil, according to the proportion of requests are mixed, each plate Chuangtu nitrogen, phosphorus and potassium in bed all l.0 ~ 1.5 g. of acid, pH value of 4.5 to 5.0 is appropriate. Chuangtu with water disinfection, with Nixon 1 500 times the enemy poured per plate 0.7 kg, the number of enemy Eriksson must not exceed 0.5 g. per plate promote the use of "mother agent of rice seedling nutrition soil", follow the instructions to mix well. 2.3 mechanized planting 2SB-500 automatic with a planter, or 2BD-840 push-type seeder mechanized planting, ensure the bud seed 2.3 / m2; subsoil thickness is 2.0 ~ 2.5 cm, Futuhoudu is 0.5 ~ 1.0 cm. Seedling Management 2.4 Leaf emergence to 1.5, should ensure that the day temperature 28 , can not exceed 30 , the night is not lower than 5 , 1 ~ 2 d 1 permeable water; 1.5 to 2.5 leaves, the daytime temperature should be guaranteed shed 22 , anti-high temperature leggy; 2.5 to 3.5 leaves, the day the greenhouse temperature 20 , the night of not less than 10 , day and night ventilation can be hardened; 1.5 to 3.5 leaves, the 2 times a day pouring water. respectively 1.5, 2.5 leaves and planting early, combined with water to recover pure N lg per plate after washing. reposted elsewhere in the paper for free download 3 mechanical rotary technology of paddy field Paddy paddy rotary machine can be turned off to complete, machine rake, reducing mechanical operating costs, reduce operational links, labor, save time, fuel, and water saving bulb fields can be saving 30% to 50%. Its rotary operation pulverizer capacity, the surface smooth. mulching rice tight, high efficiency, low fuel consumption, a rotary plow to achieve normal operating times and the harrowing effects of the pulverizer, topsoil breathable, good water permeability, is conducive to root Development [2]. the technical requirements: First, Rotary paddy fields, generally in the local planting before (May) 20 d or so, pour fields until after the planting can be formed; Second, farming, the tail wheel tube extension Source tube length can not exceed 100 mm, while the operation should be standing hand rails frame, so coulter or too off the ground over the ridge groove, so as not to bend the inner tube; third operation, without rendering the rotary knife wound weed too much, otherwise it will consume Power and increase tractor parts wear; Fourth, removing weeds, the need to turn down the throttle, the clutch, brake handle on the "off" position, the variable speed operation of the handle and the rotary blade the handle on the neutral position, and then clear the weeds 4 mechanized planting site preparation techniques Plots to Baping, rake thin, water depth 2 ~ 4 cm, the general precipitation 1 ~ 2 d, depending on the soil may be. Rake the soil to fine, leveling, mud rotten, no debris, depth of 2 ~ 4 cm, rake take some time after the deposition, usually 1 ~ 2 d; planting a row spacing of 30 cm, spacing according to species debugging. inserted 2 to 4 / hole, 5 to 7 post-plug / hole. planting depth of 2 ~ 3 cm for the should not be too deep, so as not to affect the tiller. 5 mechanization of field management Eastern red card throwing machine can be a machine, can throwing, but also fertilizer and spraying, to prevent disease, insects, weeds and other effects [4]. 6 mechanized harvest technology of rice Mechanization of rice paddy harvest is to achieve an important element of full mechanization. Harvested by combine harvester, a complete harvesting, threshing, cleaning and other processes. Compared with the manual harvesting, mechanized harvesting of rice. Can improve productivity, reduce harvest losses to save costs, reduce labor intensity and improve production conditions of farmers. 7 References [1] Yang, Wang Chunsheng, Su Hoon Lee, et al. Alpine region mechanized cultivation of rice seeding rate on rice in different disk seedling quality and yield [J]. RICE, 2006 (5) :27-29. [2] Xia item. On the mechanization of rice cultivation techniques [J]. Agricultural Equipment & Technology, 2006,32 (4): 14. [3] Wang Zhongyou, Xu Lianxi. Friendship Farm Mechanization of Rice Cultivation Experience [J]. Modernization of agriculture, 2001 (1) :37-39. [4] Zhong-ping, cabbage, Chen Chuan, et al. City of Rice Development serve organization of [J]. Anhui Agricultural Sciences, 2007,35 (7) :2104-2105. 水稻机械抛秧栽培技术摘要主要论述了水稻机械抛秧栽培技术,包括整地、育苗、抛秧密度与时间、抛秧前准备、抛秧机操作、抛秧后田间管理等内容,对推广和普及水稻机械抛秧技术、解决当前水稻旱育苗人工插秧工效低、成本高等问题具有一定的指导作用。 关键词水稻;机械抛秧;整地;育苗;抛秧机操作;抛后管理 水稻机械抛秧是实现水稻秧苗移栽的主要方法之一,具有生产成本低、效率高、灵活简单、适应范围广和分蘖早、返青快、低节位分蘖、根系发达、生长旺盛、通风透光好、有效成穗数多、产量高、经济效益显著等特点。另外,小型风力水稻抛秧机可一机多用,既能抛秧又能喷洒农药,可作为一个理想的植保机械使用,机械利用率高。为了使广大农民更好地掌握水稻机械抛秧技术,现将笔者多年来的实践经验及理论探讨加以总结,以期为该技术的更好发展奠定基础。 1整地 采用机械旋耕或机械翻耙的方法进行整地,要求耙透、磨细、整平,并深埋秸草(秆),做到田平、泥活、泥细,呈瓜皮水状态,田表面成泥浆状[1]。同一地块要达到高低不过寸,寸水不露泥,地表干净无杂物。将耕整好的秧田沉淀10~48 h,一般砂壤田沉淀10~24 h,黑黏土沉淀30~48 h。如果不经过沉淀,秧苗抛入田里后,秧苗会随活泥被吸入泥里,影响秧苗生长和低位分蘖。沉淀要始终保持田面有水,抛秧是以寸水为宜,过深容易漂秧,过浅或无水,不利于秧苗定植,之后始终保持寸水,切勿晒干田。 2育苗 水稻机械抛秧必须使用钵盘育苗,钵盘以434孔为最佳。配制好营养土,除加入保证秧苗生长的氮、磷、钾肥外,还要添加适量的矮壮素;育苗土配置要有一定黏度,最好加入20%左右黄土,以防止抛秧时秧苗土团散落[2]。播种后秧盘表面覆土要刮净,避免连根。抛秧前一天苗床浇水即增加土坨重量,又不会使秧苗过湿,有利抛秧,拔苗时将连根苗分开[3],拔下秧苗后装入丝带,每带装盘数做到心中有数,以便按大田面积抛秧。要求秧苗高度8~15 cm,一般为3叶1心,秧龄在20~25 d较为适宜。秧苗土钵含水率应为40%~60%,手指挤压不散碎为宜。秧苗根部带泥,泥要有一定的黏性,形成泥坨,便于抛出和秧苗着泥直立。秧苗质量要达到叶色深绿、健壮、长势均匀,白根缠绕,无病害、并且有弹性[4]。 3抛秧密度与时间 水稻靠有效分蘖增产,不能过多增加穴数,栽植过密容易造成通风透光不好,影响分蘖率,茎秆细软,遇风容易倒伏,造成减产。机械抛秧时要注意将定量秧苗抛撒均匀,稻田畦埂周边可适当加密。以434孔钵体盘为例,按水田行株距9 cm×4 cm计算,应抛入550盘/hm2为宜;按水田行株距9 cm×6 cm计算,应抛入400盘/hm2为宜。根据作物品种和各地实际情况确定。适时抛秧是抛秧成败的关键,不同土壤耕地后沉淀时间不同,过软过硬,都不利抛秧,一般是耙后沉淀10~24 h即可抛秧。简易确定抛秧时间就是将秧苗举过头顶,松手落下秧苗,秧苗土坨入土2/3部分为最佳时间。抛秧宁早勿晚,根据各地土壤条件灵活掌握。 4抛秧前准备 背负式气流水稻抛秧机的抛秧原理是利用发动机高速旋转时产生的强大风力气流,经通风管连接在储秧盘的圆弧形抛秧槽上,靠强劲风动气流将秧苗抛出,然后按抛物线飞行,当秧苗飞到最高点时,往下作自由落体运动。由于秧苗根部带有泥坨较重,秧苗着泥后,自由定植直立。抛秧前先检查发动机与储秧盘的连接支承架、通风管是否连接可靠,按规定比例将汽油和机油进行均匀混合,比例为20∶1;然后加入油箱,在加油时必须保持加油用具干净卫生,并远离火源。严禁操作人员打火吸烟,以防止火灾发生。启动发动机待运转正常后,进行试抛,根据实际需要调整好储秧盘抛射仰角度。大风天不能抛,原则上在三级风即应停止抛秧;下雨天不能抛秧;水层过深不能抛,应立即排水,到寸水不漏泥方可抛秧;沉淀时间过长,地板结不能抛秧;秧苗过高不抛秧。一般秧苗控制在10 cm最佳,超过12 cm时应将苗尖切除一部分,然后再抛秧。 5抛秧机操作 抛秧机作业时,一般采用梭形行走法。在无风的天气,应根据田块形状决定行走方向;如遇有风天气,应尽量顺风向平行作业,以便提高抛秧的均匀度。启动发动机时,先将风门打开1/2,待启动后再全部打开。严禁猛轰油门,以防造成拉缸事故。在开始抛秧作业前,尽量将储秧盘装足,然后根据田块大小调整好抛射距离和高度,加大油门,两手相互配合连续不断地将秧苗输送到储秧盘的圆弧形抛秧槽内。在一般情况下将储秧盘仰角调整为45°左右较为适宜。近距离抛秧或田块较小时,可采用减小油门的方法进行抛秧作业。操作手也可适当加大或减少喂入量来调整秧苗稀密程度。随时注意观察秧苗飞行方向和着落点,尽量达到稀密均匀,合乎农艺高产技术要求。有风天,应顺风抛秧,逆风补秧;利用油门控制先抛远处,然后再抛近处;少拨快送,就是每次拨苗要少,拨动速度要快,这样会使抛秧更加均匀;抛秧时要求第1遍抛秧稍稀,然后再补抛1次,这样会更均匀。 6抛秧后田间管理 抛秧后倾斜苗无需扶正,人工扶秧反而会影响秧苗扎根,尤其是抛秧后2~3 d,人工扶秧苗则会加重损伤秧苗,造成新生根折断。抛秧后始终保持田面寸水即可,7~10 d为扎根立苗期,要特别注意田间水层管理,以瓜皮水为宜;如遇降雨,田面水层过深要及时排放[5]。扎根立苗后喷施封地农药,其他田间管理按常规进行即可。 7参考文献 [1] 王振洪,张丽辉.水稻软盘育秧及抛秧技术[J].中国农村小康科技,2008(5):28-29. [2] 周丽芳,毛盛河,王小明,等.水稻免耕抛秧技术[J].内蒙古农业科技,2007(6):115-117. [3] 乔长虹,王彬.水稻机械抛秧技术[J].农机使用与维修,2008(5):89. [4] 栾静,张雪保,杨平,等.郑州沿黄稻区水稻盘育抛秧栽培技术[J].河南农业科学,2006(7):30-31. [5] 吴勇贤.有机水稻栽培技术[J].北方水稻,2010(1):41-43.
The thermodynamic calculation is the basis of the compressor calculation. With the help of the compressor-aided design system, the ordinary compressor is able to speed up its progress in calculation, which in turn reasonablizes the design; while the thermodynamic calculation of non-oil lubrication compressor caused errors or inaccuracy when pictures are retrieved by hand and figures are not best chosen. It is towards this problem that the compressor-aided design system for the thermodynamic calculation of non-oil lubrication compressor is made by digitalizing all the pictures and figures. This system will simplize the calculating process of the thermodynamic non-oil lubrication compressor, enable to select data on line, retrieve pictures and figures intelligently, output, save and print them and improve the accuracy and reliability of the calculating parameters as well.Key words:compressor , thermodynamic calculation, aided design system, non-oil
题目是:人体三维数字化测量及建模研究 My question is: human 3d digitizing measurement and modeling study
Digital 3-dimensional Body measurment and mold-building research
兄弟,这么长,就出五分,你也太葛朗台了吧
2.1. Seed quality evaluation 2.1.1. Mechanical damage Three replications of 100 seeds were soaked in 1% sodium hypochlorite solution for 10 min. The seeds with seed coat damage swelled visibly and were counted using a hand lens. The split (%) was obtained by passing 200 g of seed through a 4.00mm round hole sieve. The material that passed through the sieve was termed as ‘‘splits’’ and then weighed (Anonymous, 1985). 2.1 豆种质量评估2.1.1机械损伤经过3遍流程的100颗豆种在1%的漂白液中浸泡10分钟。种子以及种皮的很明显地膨胀损坏可以通过手持透镜观测到。 破裂指数通过200g的种子经4毫米圆洞筛网筛选得到。通过筛网的原料被称作“破裂”然后称重。2.1.2. Germination test Germination ability was determined according to the Association of Official Seed Analysts (Anonymous, 1981). Three replications of 100 seeds were placed in presoaked germination paper and were then placed in a seed germinator at 251C for 7 days. After 7 days, the percentage of seeds germinating normally was recorded. 2.1.2 发芽力检测发芽能力是按照官方的种子专家学会去定义的。经过3次流程的100颗豆种被放置在发芽试纸上预浸,人后在发芽力检测仪上以251C的温度放置7天。 7天之后, 发芽种子的比例被记录下来。2.1.3. Seed vigor The seed vigor tests were conducted according to the International Seed Testing Association (ISTA) method (Anonymous, 1985). Sheets of paper towel with 350 seeds were kept in a seed germinator at 251C for 7 days. After 7 days, the lengths of germinated seedlings were measured in centimeters. The vigor index was calculated as vigor index ¼ 1 NX germination ð%Þ seedling length ðcmÞ; where N is the number of seeds that germinated. 2.1.3 种子的活力种子活力的检测是按照国际种子检测协会的步骤操作的。350颗豆种放在纸巾上,在种子发芽力检测仪器内以251C的温度保存7天, 7天之后, 以厘米为单位去测量种芽的长度。活力指数是按照vigor index ¼ 1 NX germination ð%Þ seedling length ðcmÞ; where N is the number of seeds that germinated.(此处由于有乱码, 无法翻译)2.1.4. Accelerated aging This test was used to predict the storage potential of seed. It combines the stresses caused by high temperature and high humidity to which seed maybe exposed. It is expected that the seed lots which record a higher level of germination in the accelerated aging test can be stored for a longer period than others. Two replications of 50 seeds were kept in perforated plastic boxes. These boxes were kept at 401C and at 100% relative humidity(r :h:) for 96 h. The germination of these lots was recorded as outlined by the ISTA (Anonymous, 1985). 2.1.4加速老化这个检测是用作预告种子的储存潜力的。 它包括也许种子露天放置时,由高温度和高湿度造成的作用。人们预计在发芽力检测中有高记录的那批种子能够在加速老化测验中比其它的种子储存的更久。经过2次流程的50颗种子保存在穿孔的盒子当中。这些盒子被放置在401C温度及100%相对湿度中96个小时。这批的发芽力被ISTA作为要点记录下来。2.2. Determination of moisture content The standard oven method outlined by the ISTA (Anonymous, 1985) was employed. Three replications of 10 g seed were kept in a hot air oven at 1021C for 24 h. At the end of this period, the samples were transferred to a desiccator for cooling. The samples were then weighed and moisture content calculated on a dry mass basis. 2.2 含水量的定义ISTA大纲中的标准加热程序被引用到这里。经过3次流程的10g豆种被保存在干烤箱中以1021C的温度放置24小时。 在检测最后, 样品被转移到干燥器中冷却。然后样品称重,并计算含水量,按照折干计算。2.3. Evaluation of damage due to free-fall To determine the effect of height of fall on the seed quality, three replications of 100 seeds, drawn from each treatment, were dropped from a height of 0.5, 1.0, 1.5, or 2.0m on to a cement floor or a galvanized iron floor. The dropped seeds were tested for germination and vigor as before. 2.4. Statistical analysis of data The data collected during the experiments were analyzed using ANOVA (Anonymous, 1992) to study the effects of m:c:; process stages and heights of free-fall on the parameters of seed quality. The differences in means were examined using the Tukey test of significance.2.3 由自由下落造成损失的评估为了确定下落高度对种子质量造成的影响, 经过3遍流程的100颗种子, 分别从0.5, 1.0, 1.5, 2.0米处下落到水泥地或者镀锌铁板上,象以前一样,下落的种子被检测种子发芽力以及活力。2.4数据统计分析使用ANOVA分析了在实验当中所收集的数据,研究了含水量,加工平台以及自由下落的高度参数在种子质量方面的影响。检测方式的差异已被Tukey test of significance.验证。
IntroductionMachining aims to generate the shape of work-piece form a solid body,or to improve the tolerances and surface finish of a previously formed work-piece,by removing excess materials in the form of chips. Machining is capable of creating geometric configurations,tolerances, and surface finishes often unobtainable by any other technique.However, machining removes materials, which has already been paid for, in the form of relatively small particles that are more difficult to recycle and are in greater danger of becoming mixed. Therefore,developments often aim at reducing or-if at all possible-eliminating machining, especially in mass production.For these reasons, machining has lost some important markets, yet, at the same time, it has also been developing and especially having captured new markets with the application of numerical control.Some feel for the important of machining may be gained from the observation that in 1983 there were about 2 million metal-cutting machine tools in the unite states ( of which some 5% were numerically controlled ) and that labor and overhead costs amounted to $125 billion, or 3% of the GNP.
In view of the pivotal role of rolling bearing in rotating machinery and equipment, it is very important to diagnose the fault, and it is the best way and means to establish a set of efficient and convenient bearing fault diagnosis system. Most of the traditional diagnostic system depends on a number of professional hardware equipment, these instruments are obviously difficult to meet the requirements of information technology, and caused a lot of hardware redundancy. With the rapid development of computer technology, the virtual instrument technology has been applied to the field of bearing fault diagnosis has become a trend. This paper introduces the characteristics and structure of virtual instrument technology. On this basis, the resonance demodulation technique is introduced into the signal analysis of virtual instrument to extract and analyze the bearing fault signal. Finally, based on LABVIEW platform, a set of virtual instrument for bearing fault signal analysis is developed.
用谷歌翻译的,悬赏能快些给我吗?算我祈求,我有急用!!谢谢,真的有急用,我现在都要哭了!!车削机床机床工具被广泛用于工业,以生产各类机械零件。有些是一般用途的机器,和其他人用来执行高度专业化的操作。使用最广泛的机床是普通车床,它提供了一个旋转轴的主要原则的议案,同时适当传授饲料动议的工具。的工件,必须牢牢掌握,经常在一个夹头。酒吧也可举行collets ,其中包含一个分裂套管推或拉对锥面。工件形状的尴尬往往是由螺栓的面板。 包含的启闭机制的驱动器,通常将改变齿轮和变速驱动器。长期工件支持他们最后提出了中心举行尾座。这个工具本身是一个工具举行后,允许设置工具的角度(横向和纵向) 。该工具后是安装在一个马车,而这反过来又获得支持的方式加工的床,确保刚性和免受震动。悬垂部分,停机坪的运输,可从事与饲料棒给予连续进给运动,或与丝杠切割的线程。很长工件的担保反对过度偏转的两个手指中心稳步休息休息或螺栓的车床床;后续其余贴近马车。 有时工具后坐在休息复合工具结合幻灯片,可以设置在任何角度,因此,圆锥表面可以通过手喂养工具。参观双向工具后可旋转约竖井,并允许快速变化的工具,在预设的立场,从而加快连续行动。示踪剂或重复车床的设计制造形状不规则零件自动。基本操作这一车床如下。模板的任何一个单位或三维形状是放置在一个时段。阿导或指针然后继续沿着这条形状和其运动控制的切削刀具。重复可能包括方形或锥形,肩膀,半径,沟槽,蜡烛,和轮廓,工作,如电机轴,主轴,价值茎,活塞,杆,汽车车轴,涡轮轴,以及各种其他的物体也可以打开使用这种类型的车床。转塔车床的生产车床是用来制造任何数量的相同件。 螺杆机类似的建设炮塔车床,但他们的头上旨在保持和饲料长期酒吧的股票。否则,没有什么区别。
IntroductionMachining aims to generate the shape of work-piece form a solid body,or to improve the tolerances and surface finish of a previously formed work-piece,by removing excess materials in the form of chips. Machining is capable of creating geometric configurations,tolerances, and surface finishes often unobtainable by any other technique.However, machining removes materials, which has already been paid for, in the form of relatively small particles that are more difficult to recycle and are in greater danger of becoming mixed. Therefore,developments often aim at reducing or-if at all possible-eliminating machining, especially in mass production.For these reasons, machining has lost some important markets, yet, at the same time, it has also been developing and especially having captured new markets with the application of numerical control.Some feel for the important of machining may be gained from the observation that in 1983 there were about 2 million metal-cutting machine tools in the unite states ( of which some 5% were numerically controlled ) and that labor and overhead costs amounted to $125 billion, or 3% of the GNP.
2.1. Seed quality evaluation 2.1.1. Mechanical damage Three replications of 100 seeds were soaked in 1% sodium hypochlorite solution for 10 min. The seeds with seed coat damage swelled visibly and were counted using a hand lens. The split (%) was obtained by passing 200 g of seed through a 4.00mm round hole sieve. The material that passed through the sieve was termed as ‘‘splits’’ and then weighed (Anonymous, 1985). 2.1 豆种质量评估2.1.1机械损伤经过3遍流程的100颗豆种在1%的漂白液中浸泡10分钟。种子以及种皮的很明显地膨胀损坏可以通过手持透镜观测到。 破裂指数通过200g的种子经4毫米圆洞筛网筛选得到。通过筛网的原料被称作“破裂”然后称重。2.1.2. Germination test Germination ability was determined according to the Association of Official Seed Analysts (Anonymous, 1981). Three replications of 100 seeds were placed in presoaked germination paper and were then placed in a seed germinator at 251C for 7 days. After 7 days, the percentage of seeds germinating normally was recorded. 2.1.2 发芽力检测发芽能力是按照官方的种子专家学会去定义的。经过3次流程的100颗豆种被放置在发芽试纸上预浸,人后在发芽力检测仪上以251C的温度放置7天。 7天之后, 发芽种子的比例被记录下来。2.1.3. Seed vigor The seed vigor tests were conducted according to the International Seed Testing Association (ISTA) method (Anonymous, 1985). Sheets of paper towel with 350 seeds were kept in a seed germinator at 251C for 7 days. After 7 days, the lengths of germinated seedlings were measured in centimeters. The vigor index was calculated as vigor index ¼ 1 NX germination ð%Þ seedling length ðcmÞ; where N is the number of seeds that germinated. 2.1.3 种子的活力种子活力的检测是按照国际种子检测协会的步骤操作的。350颗豆种放在纸巾上,在种子发芽力检测仪器内以251C的温度保存7天, 7天之后, 以厘米为单位去测量种芽的长度。活力指数是按照vigor index ¼ 1 NX germination ð%Þ seedling length ðcmÞ; where N is the number of seeds that germinated.(此处由于有乱码, 无法翻译)2.1.4. Accelerated aging This test was used to predict the storage potential of seed. It combines the stresses caused by high temperature and high humidity to which seed maybe exposed. It is expected that the seed lots which record a higher level of germination in the accelerated aging test can be stored for a longer period than others. Two replications of 50 seeds were kept in perforated plastic boxes. These boxes were kept at 401C and at 100% relative humidity(r :h:) for 96 h. The germination of these lots was recorded as outlined by the ISTA (Anonymous, 1985). 2.1.4加速老化这个检测是用作预告种子的储存潜力的。 它包括也许种子露天放置时,由高温度和高湿度造成的作用。人们预计在发芽力检测中有高记录的那批种子能够在加速老化测验中比其它的种子储存的更久。经过2次流程的50颗种子保存在穿孔的盒子当中。这些盒子被放置在401C温度及100%相对湿度中96个小时。这批的发芽力被ISTA作为要点记录下来。2.2. Determination of moisture content The standard oven method outlined by the ISTA (Anonymous, 1985) was employed. Three replications of 10 g seed were kept in a hot air oven at 1021C for 24 h. At the end of this period, the samples were transferred to a desiccator for cooling. The samples were then weighed and moisture content calculated on a dry mass basis. 2.2 含水量的定义ISTA大纲中的标准加热程序被引用到这里。经过3次流程的10g豆种被保存在干烤箱中以1021C的温度放置24小时。 在检测最后, 样品被转移到干燥器中冷却。然后样品称重,并计算含水量,按照折干计算。2.3. Evaluation of damage due to free-fall To determine the effect of height of fall on the seed quality, three replications of 100 seeds, drawn from each treatment, were dropped from a height of 0.5, 1.0, 1.5, or 2.0m on to a cement floor or a galvanized iron floor. The dropped seeds were tested for germination and vigor as before. 2.4. Statistical analysis of data The data collected during the experiments were analyzed using ANOVA (Anonymous, 1992) to study the effects of m:c:; process stages and heights of free-fall on the parameters of seed quality. The differences in means were examined using the Tukey test of significance.2.3 由自由下落造成损失的评估为了确定下落高度对种子质量造成的影响, 经过3遍流程的100颗种子, 分别从0.5, 1.0, 1.5, 2.0米处下落到水泥地或者镀锌铁板上,象以前一样,下落的种子被检测种子发芽力以及活力。2.4数据统计分析使用ANOVA分析了在实验当中所收集的数据,研究了含水量,加工平台以及自由下落的高度参数在种子质量方面的影响。检测方式的差异已被Tukey test of significance.验证。
2.1 。种子质量评价2.1.1 。机械损伤3次重复的100个种子浸泡在1 %的次氯酸钠溶液为10分钟左右。 种子种皮损伤肿胀visiblyand计数用一只手的镜头。分裂( % ) 获得绕过200克种子通过4.00毫米圆孔筛。材料通过筛被称为''分裂''然后权衡(无名氏, 1985年) 。 2.1.2 。发芽试验发芽abilitywas决心根据该协会的官方种子分析家(无名氏, 1981年) 。 3次重复的100种被安置在presoaked发芽纸然后被放置在一个种子萌发在251c为7天。后7天内,这个比率的种子发芽normallywas记录。 2.1.3 。种子活力种子活力,进行测试,按照国际种子检验协会(土改)方法(无名氏, 1985年) 。张纸毛巾3 50种子被保存在一个种子萌发在251c为7天。经过7天内的长度树苗发芽测定厘米。活力指数计算公式为活力指数¼一日nxgermination -% þ幼苗长度ð cmþ; 其中n是多少种子发芽。 2.1.4 。加速老化这项测试是用来预测贮存潜力的种子。它结合了讲所致高温高压humidityto其中种子也许暴露出来。我们预计这种子地段纪录更高层次的萌发,在加速老化试验可以储存一一段较长的时间内,比别人。两个复制的50个种子则留在穿孔塑料盒等。 这些箱子存放在401c和100 %相对湿度(比R : H :已)为每小时96发芽这些地段被记录为概述撞土改(无名氏, 1985年) 。 2.2 。测定水分含量标准烤箱法概述由土改(无名氏, 1985年)被聘用。三复制的10克种子被保存在一个热风烘箱,在1021c为24小时在这一时期结束时, 样品被转移到干燥器中冷却。样品,然后权衡和水分内容计算,就drymass基础。 2.3 。评估损害的,由于自由下落以确定影响身高的下降对种子质量, 3次重复的100个种子, 从每一次治疗,分别下降了,从高处的0.5 , 1.0 , 1.5 ,或2.0米就以一个水泥厂地板或镀锌铁楼。掉落的种子进行了萌发及活力作为前。 2.4 。数据的统计分析收集到的数据,在实验进行了分析用方差分析(无名氏, 1992年) studythe影响男: C组: ;进程的阶段和高度自由下落对参数的种子质量。 差异是指检验用tukeytest的意义。
IntroductionMachining aims to generate the shape of work-piece form a solid body,or to improve the tolerances and surface finish of a previously formed work-piece,by removing excess materials in the form of chips. Machining is capable of creating geometric configurations,tolerances, and surface finishes often unobtainable by any other technique.However, machining removes materials, which has already been paid for, in the form of relatively small particles that are more difficult to recycle and are in greater danger of becoming mixed. Therefore,developments often aim at reducing or-if at all possible-eliminating machining, especially in mass production.For these reasons, machining has lost some important markets, yet, at the same time, it has also been developing and especially having captured new markets with the application of numerical control.Some feel for the important of machining may be gained from the observation that in 1983 there were about 2 million metal-cutting machine tools in the unite states ( of which some 5% were numerically controlled ) and that labor and overhead costs amounted to $125 billion, or 3% of the GNP.
The application of reconfigurable logic to high speedCNC milling machines controllers高速数控铣床控制器的可远程控制逻辑的应用摘要 可远程控制型逻辑已经在高速计算机数控数字控制器中达到资料检索能力,在这种控制器中现代伺服系统上的高速处理速度是临界的。因为它们的开放式体系结构使得它们适于单芯片应用系统,像现场可编程门阵列的可远程控制装置因其相似的逻辑复杂性而优于微处理器和的数字信号处理。这项工作的贡献是为了达到现代伺服系统要求应用于高速数控铣床现场可编程门阵列的基础上的比例-积分-微分控制器的发展。结果表明比例-积分-微分控制系统的功能性,它已经合成为现场可编程门阵列平台,成功地应用于高速数控铣床。R 2007埃尔斯韦尔有限公司(R 2007 Elsevier Ltd)保留所有合法权利。关键词:可远程控制逻辑,高速数控,现场可编程门阵列,现代伺服系统导言 高速电脑数控机床运转控制包括大于40米/秒进料率以及高于1克的加速动力,有时候是2克(引自Wang, Liu, & Ai, 2003)。 由于这些因素,相对于传统速度电脑数控,对高速电脑数控机床的运转控制器在电子设计上具有较高要求,这就需要较高的减少在线加工有效时间的取样比例(现代伺服系统)并行存储器地址计数器(Delta Tau, 2005)和数字微型电路-180 (Galil Motion, 2004) 是一些基于现有数字信号处理器的最通用的市场上可买到的电脑数控控制器和它们专用控制算法设备的微型载体,在这里额外的设施也是为在一个固定的封闭的体系结构上的处理器支持,这种架构非常适于标准速度处理。由于商用数字信号处理和微处理器上的连续的处理数据流程,对高速控制取样比例的增加可以在处理器运作上强加严厉的限制;因此,为了达到在线运转,其他信号处理交替必须予以考虑。 高速伺服系统控制器作为硬件附设印刷电路板隐藏在个人电脑(PC机)中,这种电路板不受需要大量资源的计算的约束。现场可编程门阵列 (FPGA) 已经以单芯片系统(SOC)应用软件在赢得市场,这是因为它们可以整合由用户定义的使硬件内外部设备逻辑联系起来的处理组件,这种组件组合了不依赖厂商或特殊的平台的开放式体系结构。为整合处理组件以及它们作为SOC进入现场可编程门阵列相关的外部逻辑支持,该装置给设计者提供了足够的自由在完善生成廉价单片机的构建能级时去完成特殊任务。 现场可编程门阵列是基础的逻辑板的阵列,在这里使用者可以定义其内部连结性,使得它们在整个开式结构中可编程。因此,现场可编程门阵列具有一般用途的处理器和可以远程控制许多次的专业化电路的优点,好像直到得到要求的泛函性。现场可编程门阵列的速度和大小比得上专用集成电路(ASIC),但是现场可编程门阵列更灵活,它的设计流程由于可远程控制而更短。现场可编程门阵列超出数字逻辑电路的简单设备;它们可被用于专门体系结构的设备去执行加速演算法。进入现场可编程门阵列运行演算法的专门体系结构比数字信号处理(DSP)中的设备或者为处理器可有高10-100倍的运行速度。另一方面,数字信号处理和微处理器有固定的用于运算的连续体系机构,在样本之间的处理时间大量减少时,该机构可以毫不费力的负载,而现场可编程门阵列有一个简单自然的并行体系结构进行高速计算。除了优越性已经被证实以外,现场可编程门阵列的发展在硬件描述语言(HDL),的情况下被完成,这一点使得便携式和台式不受约束,这倒不是市场上可买到的数字信号处理器或微处理器的原因。 通过与其它装置相比较,突出其最终工业应用的多功能型、效用性和实用性,本文的主要目的是表明用现场可编程门阵列为电脑数控在比例-积分-微分控制器设计中的有利性和优越性。试验结果表明一种经济而简易的选择,这中选择可满足在电脑数控工作母机控制上的精确性和联机处理时间要求必备的条件
摘要- Cobots是一类机器人的使用不断 无级变速发展高保真可编程 约束的表面。 Cobots消耗很少的电力 即使在提供高输出部队,其传输效率高众多的 传动比。 Cobotic变速箱也有能力 采取行动作为一个制动器或将成为完全免费。设计 和性能Cobotic手控制器,最近 发达国家六自由度触觉显示器,是审查。 这个装置表明,高动态范围和低功耗 消费实现的cobots 。彻底的比较 电源效率cobotic系统与传统的 机电系统提供。 三个关键要求机器人技术用于 假肢和康复是低体重,低功耗 消费和安全性。我们建议cobotic技术作为 传输架构,可以处理这些问题。 Cobots是机器人利用非完整约束 的指导车轮的相对速度有关的 机制的联系。阿cobotic传播是一个不断 无级变速器(无级变速器)之间的积极和消极 比率,可以涉及两个平移速度,两个 旋转速度,或旋转速度为平移 速度[ 1 ] 。我们最近推出了Cobotic手 控制器(图1 ) ,六自由度动力 合作机器人,并阐述其能力作为触觉界面[ 2 , 3 ] 。通过本论文中,我们表明, 机械结构和传输中使用 Cobotic手控制器处理所有三个以上 上述要求的假肢和机器人 康复。
在上次的基础上做了对应的调整和适当的修改。望分析体会,以求能有所收获!AbstractThe article is entitled as Process Tooling Design and CAD/CAM of the Rocker Axle Base from Chao Yang Diesel Co.,Ltd.. The design aims to complete the module design of 195 diesel rocker axle base, the draw up of its processing line and procedure card and the design of manufacturing special fixture, etc.Model-designed by the 3D shaping software Pro/E, the content consists of the following: solid mold which spares and blanks are built by the spare mold, design for the investment casting molds involving the analysis, calculation and design of mouldjoint, gating system, ejecting machine, punch-cum-blanking die and the die base,etc. Then complete the final assembling drawing according to the engineering module and the CAXA electronic drawing board. Establish the spares processing techinical procedure,including the select of the processing method, the sketch out of the processing line and the definition of the maching allowance. Then calculate the techinical parameter and establish corresponding process card in light of the technical schedule. Design two sets of special milling machines and one set of special drilling machine. After the analysis, select and design, finally accomplish the engineering drawing by use of CAXA electonic sketch board.The design difficulty is the jigs and the moulds. After refering to plenty of documents, settle down these problems and round off the design under the guide of teachers.Key Words: solid model, module, jig, procedure