他们在我们的窗子里面贴了层塑料薄膜。They put plastic sheeting on the insides of our windows.秧苗上面覆盖着塑料薄膜.The rice seedlings were covered with plastic sheeting.我在容器上盖了一片聚乙烯塑料薄膜，解决了这个问题。I have overcome this problem by placing a sheet of poly...
Make an investigation on haemolysis active of lauryl glucoside and hexadecyl glucoside.考察了十二烷基葡糖苷和十六烷基葡糖苷的溶血活性.The method has been used for the determination of glucose in α - methyl glucoside.该方法可用于测定α甲基葡萄糖苷中葡萄糖含量.Amygd...
煤气管道已被关闭,以防漏气.The gas pipe has been blocked off to prevent escapes.这会造成漏气，破坏罐子的密封性。This would permit air to enter, breaking the hermetic seal of the jar.如果煤气管漏气, 你必须关闭送气管, 因为那很危险.If the gas blows back , you must turn off...