Epoxidation and oxidation gave the racemic C 18 - juvenile hormone.通过环氧化和氧化就得到外消旋的含十八个碳的昆虫返动激素.In the epoxidation, chloroform and t butanol gave the best results.在环己烯环氧化反应中, 以氯仿和叔丁醇为溶剂时,环氧化反应的结果最好.Recent progress on asym...
下面是典型的认识论问题: 什么是科学方法?The following are typical epistemological questions: What is scientific method?认识论是关于认识的理论.Epistemology is the theory of knowledge.哲学在传统上分为三个领域: 认识论 、 形而上学和价值理论.Traditionally, philosophy has been par...
她的英语语法上没错，但是里面夹杂着很多法语短语。While her English was correct, it was peppered with French phrases.他不通语法和乱用标点是出了名的。He was known for his poor grammar and punctuation.语法错误对我来说总是非常明显，而拼写错误也很显眼。Grammatical errors are always obvious ...
He is a terrific athlete and a brilliant jumper...他是个出色的运动员，弹跳力非常好。The athlete takes off from one leg from an inward twist.这名运动员向内转体一周单腿起跳。His admiration for the athlete did not extend to the point where he would follow ...
That's exactly what researchers at the French firm Genset think they've come up with.这正是法国基塞(genset)公司研究人员考虑的问题,他们已实现了这一愿望.Our C, CL, CLE series of genset adopt half open structure which will reduce noise much....