有几个 guo nei qi kan gong tong yi zuo ke yi you ji ge
作者 guo nei qi kan ke fou you gong tong di yi zuo zhe
核心共有 化工类 hua gong lei he xin qi kan yi gong you duo shao zhong
作者 na xie qi kan you lun wen gong tong di yi zuo zhe
种数 全世界 共有 quan shi jie qi kan zhong shu yi gong you duo shao zhong