The alternative use of buffered silica gel resulted in modest hydrolysis ( ~5 - 10 % ) of the imine.选用温和的水解导致缓冲硅胶 ( ~ 5-10% ) 的亚胺.The reaction should be buffered to a pH of between 6 and 11.应使反应缓冲到pH值为6～11.The drug buffe...
通用柴油动力火车头将车厢转轨到了4号月台。The GM diesel engine shunted the coaches to Platform 4.他坐在一节二等车厢的角落里。He sat in the corner of a second-class carriage.当火车驶进巴斯尔登站时，一节车厢的门撞到他了。A carriage door struck him as a train drew into Basildon st...
Crystals having this property are said to be doubly refracting , or birefringent.具有这种性质的晶体叫做双折射晶体.In pregnancy a high fibre diet is doubly important...在孕期,含高纤维素的饮食越发地重要。She now felt doubly guilty; she had embarrassed Fra...
I tried again to get ahold of my cousin Joan.我再次尝试联系我的表妹琼。Her cousin, a hairdresser, was perming her hair as a special treat.她表兄是美发师，正在免费给她烫发。George ducked out of his forced marriage to a cousin.乔治逃脱了和他表亲的包办婚姻。...
They dish out clean towels on Monday.星期一他们分发毛巾.Ann's mother asked her to dish out the beans.安的母亲叫她夹豆子给客人.Wow, that vice president guy can sure dish out the guff!哇, 那位副总统肯定又滔滔不绝地讲一大堆废话....
她是他生命的甘露春雨, 是他崇拜的对象.She was the great bath of life, he worshipped her.怀特洛先生的仁慈就会象甘露一样从天而降.Mr. Whitelaw's benevolence would descend like soothing balm.水 、 丙烯晴和半乳甘露聚糖胶,同碱金属氢氧化物在一起,加入到反应器中.Water, acrylonitrile and the ...