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...
Did equilibration take place before or after setting of chromite and silicates?究竟平衡作用发生在铬铁矿和硅酸盐下沉之前,还是在其后?The commercial product however, containing silica and silicates, has a positive effect.然而含有硅石和硅酸盐的工业品都有肯定的效果.In ot...
The most pleasurable experience of the evening was the wonderful fireworks display.这个晚上最让人高兴的就是精彩的焰火表演。Most of the wine was unfit for human consumption.这些酒中大部分都不适于人类饮用。Mark was condemned to do most of the work.马克被迫承担大部分工...
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...