聚丁二烯经一系列反应转变成丙啶基化合物 ( 聚丁二烯亚胺 ).Polybutadiene is changed to an aziridinyl compound ( polybutadieneimine ) by a series of reactions.丁二烯的衍生物,用于聚合制成氯丁橡胶.A synthetic rubber made from the polymerization of butadiene sodium.利用哈...
这把她描绘得很懦弱，其实她性格十分坚强。This portrays her as wimpy, but she has a very strong character.他风格真高。或者我是否应该说他很懦弱？That was sporting of him. Or should I say cowardly.她相貌平平，性格懦弱。She was a plain-looking woman with a weak chin....
Cabbages Cabbage is related to masteredmustard, turn upsturnips, kill kale and colorscollards.卷心菜和芥菜、萝卜 、 甘蓝类蔬菜是同一种类的.Vegetables easily effected affected by ethylene include asparagus, brocoli broccoli, cabbage and cucum...