锌基合金的压铸件总是在氰化镀液中镀铜.Zinc base die castings are always copper plated in cyanide baths.简要回顾了无氰碱性镀铜的发展历史.The development history of cyanide - free copper electroplating is briefly reviewed.指出了普通镀铜工艺的缺点.The disadvantages of c...
The planetarium staff also prepared talks for radio broadcast.天文馆的工作人员还要准备讲稿给电台广播.On his days off, he takes them to the Museum of Natural History or the Planetarium.休假的日子里，他就带他们去自然历史博物馆或是天文馆。The motions of the stars can ...
Alcoholics are notorious for their ability to deceive themselves about the extent of their problem.酗酒者善于在自身问题的严重性上自欺欺人，这是人所共知的。Because she was lumped together with alcoholics and hard-drug users, Claire felt out of place...
He's prone to flit between subjects with amazing ease.他往往会轻松自如地转换话题。Other subjects covered included nerves and how to overcome them.所涉及的其他主题包括焦虑及如何克服。Parks has a tendency to become personally involved with his photo...