The new technology for the preparation of cryolite from fluosilicic acid and ammonium hydrocarbonate is introduced.介绍了氟硅酸、碳酸氢铵制备冰晶石的新工艺.Bites suction cup the toxin and apply 3 % ammonia solution or 5 % sodium hydrocarbon...
我不知道如何使用同温层观察镜。I don't know how to use the stratoscope.关于同温层中的粒子这一问题将另行讨论.The subject of stratospheric particles will be discussed separately.两类物质分别在同温层和对流层氧化降解.Chlorofluorocarbons and hydrochloroflorocarbons are ox...
This puts the cart before the horse; elections should follow, not precede, agreement on a constitution.这样做是本末倒置；选举应该在宪法确定之后举行,而不是之前。The politicians who lost the elections will be consigned to the dustbin of history.落选的政客...
Foreign Newscast is on Page 16.国外新闻在第16版。An anchor coordinates a newscast in which several correspondents give reports.新闻节目主播在新闻节目中综合整理若干记者的报导.To narrate or coordinate ( a newscast ).主持叙述或协调 ( 新闻广播节目 )...