He took out a sheaf of papers and leafed through them.他拿出一沓报纸，匆匆翻阅了一下。She moved the sheaf of papers into position.她把那捆报纸挪到合适的地方。He drew a sheaf of papers from his breast pocket.他从上衣口袋里抽出一扎文件....
控制器通常有错误发现者和喇叭筒.The controller usually consists of an error detector and amplifier.他用喇叭筒叫卖, 省劲多了!He hawks with a megaphone, saving a lot of effort.喇叭筒对于使用西元574A应该 在500仟赫有可接受的环增益.The amplifier should have acceptable loop ...
IntroductionThe centrosome is the major microtubule organizing center ( MTOC ) of mammalian cells.中心体是哺乳类细胞主要的微管组织中心.Most mammalian cells contain multiple species of DNA dependent DNA polymerases.大部分哺乳动物细胞均含有多种依赖DNA的DNA聚...
They came straggling up the cliff road...他们零零散散地沿着悬崖小路走上来。The meanders of a prattling brook, were shaded with straggling willows and alder trees.一条小河蜿蜒掩映在稀疏的柳树和桤树的树荫间,淙淙作响.They came straggling up the cliff road.他们零零散散地沿着...