Situations of preparing isocyanate trimers at home and abroad are mainly introduced.主要介绍国内外异氰酸酯三聚体的制备状况.Polyether - type isocyanate prepolymers are prepared with polyether polyols and tolylene diisocyanate.采用聚醚多元醇和甲苯二异氰酸...
她的目光越过克里斯蒂娜盯着床。She stared past Christine at the bed.非同卵双生子是两个受精卵同时在子宫内着床的结果。Non-identical twins are the result of two fertilised eggs implanting in the uterus at the same time.我摸索着走进那间黑乎乎的屋子里,笨手笨脚地摸着床.I groped into the d...
He appeared hardly capable of conducting a coherent conversation.他好像连话都说不清楚。Dennis had recently begun a successful career conducting opera.丹尼斯最近开始从事歌剧指挥的工作，并且非常成功。Dennis had recently begun a successful career conducting ...
His body slowly undulated in time to the music.他的身体随着音乐的节拍慢慢摆动。The sail undulated gently in the breeze.帆在微风中缓慢地波动.The ripe wheat undulated in the Breeze like the incoming tide.成熟的小麦象潮水般随风起伏....