设计出滚筒式填料筛板萃取器,并应用该萃取器反胶团法萃取蛋白质.A packed sieve plate roll contactor was designed to extraction protein with reversed micelles.K46600双联萃取器通过萃取原油及其产品,测量铅 、 酸或盐含量.Determines lead, acid or salt content of crude petroleum and ...
She stumbled and fell, scraping her palms and knees.她绊了一下摔倒了，手掌和膝盖都蹭破了。The lights mysteriously failed, and we stumbled around in complete darkness.灯不知怎么地不亮了，我们在一片黑暗中跌跌撞撞地走着。A man stumbled heavily against the side of the ...
Add up the bills for each month. Take this away from the income.将账单按月累加，再从收入中扣除。...heating bills.暖气费账单She had several large bills in her pocketbook.她钱袋里有几张大面额钞票.The minister has piloted several useful bills through Parli...
There General Walters would come aboard to greet me, justifiably beaming with pride at his arrangement.在那儿沃尔特斯将军会登上飞机来接我, 理所当然为他们的安排感到洋洋得意.Practically speaking, the Walters ruling may not be very important.具体地讲, "沃尔特斯"案的...
In 1941, the train would have been pulled by a steam engine.1941年，火车本可以由蒸汽机车拉动。Who invented the steam engine?谁发明了蒸汽机？Who invented the steam engine?谁发明了蒸汽机?...