Medicine intermediate N - ethylethylenediamine ( NEED ) was synthesized from acrylamide and ethylamine by addition reaction and Hofmann rearrangement.以丙烯酰胺为起始原料,经乙胺加成后,再经Hofmann重排两步反应后合成了药物中间体N - 乙基乙二胺 ( NEED )....
Catholic Spain had, by expelling its Jews, achieved the spiritual security of a united church.信奉天主教的西班牙人在逐出犹太人后, 统一了教会,在精神上获得了安全感.Expelling wind and cold pathogens , relieving exterior syndrome and clearing away heat.疏风散...
High fibre diets give the feeling of fullness.高纤维饮食让人有饱胀感。...a mystery that will be revealed in the fullness of time.将会在适当的时候揭开的谜团The coat has raglan sleeves, and is cut to give fullness at the back.这件上衣采用了套袖，并且在裁剪上给予背部宽...
与前一年相比，哥伦比亚广播公司的收视率再次大幅提高。CBS's ratings again showed huge improvement over the previous year.在第4频道的收视率调查中《欧洲警察》被《凯特和阿莉》、《希尔街的布鲁斯》和《何方神圣》打败。Eurocops was beaten in the ratings on Channel 4 by Kate and Allie, Hill Stre...