本文论述了利用混合溶剂——结晶法提纯除虫脲的分析技术.The method was established for purification of diflubenzuron by crystal technique with mixed solvents.通过反相液相色谱方法往甲醇与水的混合流动相中加入适当调节剂,分离和测定除虫脲原药中的主要杂质.The separation and determination of the prim...
'Whoa, I'm goin' to Barbay-dos!' ran the jaunty lyrics of a 1970s hit song.“喔，我要去巴巴多斯!”一首20世纪70年代流行歌曲这样欢快地唱道。Whoa, that's a nasty burn you got on your ear.噢, 你就是用这种肮脏方式上车的.Slow down! Whoa!慢点！停！"W...
This young man had all the inclination to be a profligate of the first water.这个青年完全有可能成为十足的浪子.Their profligate lifestyle resulted in bankruptcy.他们挥霍的生活方式导致的破产....the most profligate consumer of energy in the world.世界上能源挥...
The Chinese Christians, therefore, practically excommunicate themselves from their own clan.所以, 中国的基督徒简直是被逐出了自己的家族了.There are genuine Christians in the Lutheran Church.在路德宗教会中有真正的基督徒.Early Christians smashed the gods of ...
Boxes are stacked in every nook and cranny at the factory.盒子叠放在工厂的各个角落。He knew every nook and cranny of the area.他对这一带的一草一木都了如指掌.I've searched every nook and cranny but I still can't find the keys.我找遍所有的地方也没找到钥...