在催化剂存在下,用双氧水氧化乙二醛溶液快速合成了乙醛酸.Glyoxylic acid was rapidly synthesized by catalytic oxidation of glyoxal with H 2 O 2.利用报废的液体推进剂硝酸-27S和乙醛制备乙二醛.Glyoxal is prepared with waste liquid propellant HNO 3 - 27 S and ethanal.乙二醛 、 乙...
The punishments for robbery and murder are prescribed in the penal code.对抢劫和凶杀的惩罚在刑法中有明文规定.He is fair in his judgments, rewards, and punishments.他的判断 、 奖励和惩处是公平的.The government is proposing tougher punishments for offici...
A electrocardiogram records the heartbeat.心电图上标明心跳次数.Perhaps the single most widely used monitoring device is the electrocardiogram.心电图可能是最广为应用的监测仪.A total of 109 patients underwent physical examination, electrocardiogra...