查找文献英文怎么说

[表达形式]document survey；literature survey; literature search; [例句]我的学习研究包括广泛的文献调查和与首席专家的通讯联系。My study has included an extensive literature search plus correspondence with leading

The aim of research was confirmed by literatures searched, investigation of questionnaire and practical It was recorded that the conditions of taekwondo block applied in competition for the players that were to be observed in the research; the all information was integrated and Based on the analytical results suggestion and method for the block used in taekwondo competition were Key words：taekwondo,taekwondo block,competition