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...
His breathing was torturous.他的呼吸充满痛苦。As a general rule, all muscular effort is enhanced by breathing in as the effort is made...通常，肌肉的力量能通过使劲儿吸气增强。He could hear that her breathing was uneven...他能听到她的呼吸不均匀。He stood in the...