The method was established for purification of diflubenzuron by crystal technique with mixed solvents.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 separation and determination of the primary impurities of diflubenzuron by liquid chrom...
...in the days when Marlene Dietrich and Ernest Hemingway held court in the famous El Floridita club.当马琳·黛德丽和欧内斯特·海明威在埃尔·佛罗利迪达俱乐部名噪一时的时候We must help Ernest because he is in a jam.我们得帮助厄内斯特,因为他陷入了困境.Ernest Brown lives abo...
他对白丽莱茜的这种焦心真叫他苦死了.He was sick to his soul with this worry over Berenice.罗本和德尔诺的受伤令切尔西人焦心.Chelsea has injury worries over Arjen Robben and Asier del Horno.他焦心了,不由得抬步朝坨子里跑去.His anxiety carried him flying towards the dunes....
其中销售量 ( 指体积上 ) 减少最为显著的是皂石,减少了48%.The most significant percentage decrease in physical volume was registered by soap stone ( - 48 % ).采用水热法合成出不同镁通过量的两种镁皂石,分别用 羟基 铝低聚物交联制得交联皂石.Two kinds of Magnesium - saponites with differ...
安全带指示灯一关掉，我们就冲了出去。As soon as the seat belt sign had been switched off, we rushed out.在常规仪表板上指示灯的数目不断增加.The number of indicator lamps in conventional dashboards is increasing.当"禁止吸烟 " 的指示灯亮时,请您熄灭香烟.Please extinguish your ...