To start with, where and when did it happen?首先，这事发生在何时何地？Well, maybe it would be easier to start with a smaller problem.那么，也许从小问题入手会更容易些。Success was assured and, at least to start with, the system operated smoothly.成功有保证...
Azone is synthesized with caprolactam and 1 - bromododecane by phase transfer catalysis, the yield is > 70 %.以己内酰胺、澳代十二烷为原抖,采用相转移催化法合成氮酮, 收率达到70%以上.A wide | bore capillary was employed to determine caprolactam content.利用...