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.The definilion of kauri - butanol value and its determination method is described.文章叙述了“溶剂汽油”一词的由来,K. B.值的定义及测定方法.The ...
Rose heard the familiar voice, but tuned out the words.罗斯听到了熟悉的声音,但没注意听说的是什么。A small colour television was tuned to an afternoon soap opera.一台小彩色电视机频道调在了一出下午的肥皂剧上。Computers allow the plans to be fine-tuned and to be alte...
A new chalcogenide glass system containing higher content of alkali metal ions was developed.开发了有高含量碱金属离子的新型硫化物玻璃.Using such methods a conductive layer can be formed on the doped chalcogenide layer in situ.利用这种方法,可在该掺杂后的...