所加的反应物可以是二烯烃 、 环二烯烃.The feed reactants can be alkadienes, cycloalkadienes.包含两个双键的化合物叫做二烯烃.Compounds containing two double bonds are called dienes.与二烯烃橡胶相比, EPDM的双键很少.Compared with diolefine rubber, EPDM has less double b...
This is a lyrical work written with the authority and assuredness of an experienced writer.这部抒情作品由一位有经验的作家以老练、自信的笔触写成。Clinging to outside sources indicates a lack of assuredness inwardly.依赖于外部情报源,表明你缺乏内在的确信.Life is happi...
They were each blindfolded with big red handkerchiefs.他们每个人的眼睛都被一块红色大手巾蒙住了.His abductors blindfolded him and drove him to a flat in southern Beirut...绑架者把他的眼睛蒙起来，并开车把他带到了贝鲁特南部的一处公寓。The report says prisoners were often ke...
He's a very likable fellow.他是个非常可爱的人.In fact, I found him personally likable, if irresponsibly impulsive.说实在的, 我发现,这个人还很可爱, 虽然有些不负责任地过于任性了.Pam was likable and pretty.帕姆又漂亮又可爱....
He did not object.他没有反对。In the squares place a penny, nickel, dime and quarter in that order. The object is to reverse the order of these coins...在这些方块中按顺序放置1分、5分、10分和25分的硬币各一枚。目标是颠倒这些硬币的顺序。Under the integrated systemati...