Meanwhile, acetone was a polymerization inhibitor in preventing the self - polymerization ofp - methoxybenzyl chloride, and 11.同时探索了甲氧基苄氯自聚的阻聚剂, 初选的阻聚剂丙酮可使甲氧 基苄 氯粗品的收率提高11....
He has 20 years of loyal service to Barclays Bank behind him.他已经忠心耿耿地为巴克莱银行效力了20年。When Barclays Bank contracted out its cleaning, the new company was cheaper.当巴克莱银行外包其结算业务后，新公司的价格更为便宜。Barclays and National Westminster ha...
Automatic feed back circuit to keep constant revolutions of handpiece under variety of working condition.自动回溯回路设计,可确保手机在各种加工条件下可常速运转.The drum is rotated at 20 revolutions per minute for 10 minutes.圆筒以每分钟20转的速度转10分钟.The s...
Nothing betokened that the man know anything of what had occurred.显然那个人还不知道已经发生了什么事.He addressed a few angry words to her that betokened hostility.他对她说了几句预示敌意的愤怒的话.His nod betokened acceptance.他点头表示接受....
Methods: GI - II infiltrated ceramic and In - ceram disks were fabricated and polished.方法: 制备GI - 型渗透陶瓷和In-ceram圆盘形试件,研磨抛光.The organization was infiltrated by the police.这个组织已被警察渗入.Skywalker, Lando Calrissian , and Dash ...