目的探讨我国二甲基甲酰胺 ( DMF ) 的生物接触限值 ( BEI ).Objective To explore the biological exposure indices ( BEI ) of dimethylformamide ( DMF ) in China.研究表明,该反应器可有效降解苯甲酰胺.The results show that the new type reactor could degrade benzamid...
He is grander and even richer than the Prince of Wales.他比威尔士亲王还牛气,甚至更有钱。Our people are in no need of richer nations'largesse.我国人民不需要富国的施舍.Joe was no richer than his friend.乔并不比他的朋友富.[乔和他的朋友一样穷.](比较:Joewas notricher ...
On the loudspeaker his voice turned dull and cranky.在扬声器中,他的声音变得沉闷,听起来别扭.Announcements were made over the loudspeaker system.通知通过喇叭广播。The loudspeaker announced each airplane as it landed at the airport.每架飞机在机场一着陆, 扩音器就发出...