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...
在拿吃的之前，用热肥皂水把手好好地洗干净。Wash your hands thoroughly with hot soapy water before handling any food.请于今日将随函附上的捐款表格用所提供的邮资预付的信封寄回。Return the enclosed Donation Form today in the prepaid envelope provided.他把聪明都用在了犯罪上，太可惜了。Too bad...
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....