Objective To explore the biological exposure indices ( BEI ) of dimethylformamide ( DMF ) in China.目的探讨我国二甲基甲酰胺 ( DMF ) 的生物接触限值 ( BEI ).Methods Reforming the Hodge method in synthetizing DMF.参照hodge法并作,改良合成1-脱氧-1-吗啉果糖(DM...
卡琳设法达到了其职业的要求。Somehow Karin managed to cope with the demands of her career.他强烈要求保留北大西洋公约组织以维护和平。He argues strongly for retention of NATO as a guarantee of peace.如果他要求太多,工会就会投票撤换他。If he demands too much, the unions will v...
用手指头肚儿轻拍脸颊一遍。Tap your cheeks all over with the pads of your fingers.他轻拍了一下她的肩膀让她放心.He gave her a reassuring pat on the shoulder.河水轻拍着小舟的两侧.Water lapped the sides of the boat....
The door is shut so that no one may overhear what is said.门关着,这样没人能听见说话的内容。They stepped aside so that their child could not overhear their conversation.他们走到一边去,不让孩子听见他们的谈话.I happened to overhear what he said.我碰巧听到他说的话....