Methods: The content of salicylic acid was detected in the solution by dioptre analysis.方法: 运用折光分析法测定水杨酸醇溶液中水杨酸含量.Take the eye with radiation - proof zero dioptre to have harm to eyesight every day excuse me?请问天天带平光防辐射的眼...
对甘油催化氢解制取1, 2- 丙二醇效果最好的是含铜的催化剂.Copper - containing catalysts are the most suitable catalysts for producing 1, 2 - propanediol through catalytic hydrogenolysis of glycerol....
I broke away from him and rushed out into the hall.我挣脱了他，冲进了大厅。The colonel rushed up to Earle, shaking his gun at him.上校冲向厄尔，朝他挥着枪。At no time did I feel rushed or under pressure.我任何时候都不会觉得仓促或者有压力。...
我的姐姐给了我这本非常好看的书。My sister's given me this brilliant book.我会让他好看的，交给我好了。I'll show him, leave it to me.这些家具不是摆着好看的, 只是为了实用.The furniture is not fancy, just functional....