商业上采用的以镍作催化剂的氢化有两种.Commercially two main types of hydrogenations are carried out with Nickel catalyst.抑制剂和促进剂能影响氢化速率.Inhibitors and promoters may affect the rate of oxxidution.用六氢化邻苯二酸酐加入到邻苯二酸酐中,可使其放热反应减慢.Exothermic reac...
Every visitor noticed that her effusive welcome was not sincere.所有的客人都看出来她那过分热情的欢迎是不真诚的。She was very gushing and very effusive.她非常热情奔放。He was effusive in his praise for the general.他对那位将军极尽溢美之词。He was effusive in his pra...
如果你曾经和他作对过，就别想了，你没戏了。If you ever cross him, forget it, you're finished.她现年87岁，曾经是齐格菲尔时事讽刺剧团的成员之一。She's 87 years old, and a one-time member of the Ziegfeld Follies.多年前，他曾经对我说我们应该生活在一起。Once, years ago, he told me...
' steel in this class is tough, ductile and easily machined. "这种钢强韧, 延展性好,而且容易加工.Shrinkage and dispersed shrinkage are the special waster of ductile iron.缩孔和缩松是球墨铸铁特有的废品现象.The metal is very hard and strong and less ...
He'll soon realize that it's better to play a part in a big show than try to run a one - man show .他马上就会看到演 独角戏 不如搭班子好.Fruit maturity may play a part in phenotypic characterization.果实成熟期使这种表现型特征可能明显地起一些作用.Elsew...