Ethylene and trans - dichloroethylene are both inactive in the infra - red in this region.乙烯和反式二氯乙烯在红外光谱的这个区域都无活性.Plasma - polymerization of ethylene gives films of complex, uncertain structure.乙烯的等离子聚合得到复杂的, 无固定结构的薄膜.In...
Cyclopentanone ethylene ketal was synthesized with I _ 2 as catalyst.以单质碘为催化剂合成了环戊酮乙二缩酮.The blended chips containing 10 % ~65 % of n - Eicosane were fabricated with n - Eicosane, polyethylene ( PE ) and ethylene - propyl...
His hopes faded.他的希望破灭了。His hopes for the future are often divorced from reality.他对未来所寄予的希望往往脱离现实。Kiev hopes to cement close links with Bonn...基辅希望能加强与波恩的密切关系。His hopes evaporated.他的希望破灭了。The news chilled his hopes.这个消息使...
一束耀眼的阳光从门口照射进来。A brilliant shaft of sunlight burst through the doorway.每棵树、每堵墙和每道栅栏都在白得耀眼的田野映衬下十分夺目。Every tree, wall and fence stood out against dazzling white fields.弗雷迪·摩克瑞是英国硬摇滚乐界一颗耀眼的明星。Freddie Mercury was a flamboya...
Key words: enterprises civics, enterprise, competition ability.关键词: 企业公民企业竞争力.That's why I recommend spending more to teach them civics and English.因此我提议调拨更多的资金用于公民学和英语的教育....my high-school civics class.我中学时修的市政学课Th...
I left eventually at six o'clock feeling utterly dispirited and depressed.我一直到6点才极度沮丧和郁闷地离去。The King, however dispirited, ploughs on.国王虽说沮丧，但仍一往无前。She looked tired and dispirited.她显得疲倦而且神情沮丧。...
Thirty - seven patients devel oped CMV disease with an accumulative incidence of 32.5 %.发生CMV病37例,累计发生率为28.2%.the accumulative effects of pollution污染的累积效应It was impossible to state with accumulative our loss.我们不可能精确地说出我们...
He is not as friendless as he appeared to be.他并不像看上去的那样孤独无助。My friend fails to mention the long and friendless winter evenings which are interrupted only by an occasional visit to the local cinema —— virtually the only f...