改敞口式为全封闭实验装置和实验方法,不仅提高了实验水平,也提高了实验结果的准确性和实验过程的安全性;同时,亦可用于其它有危险性实验中去。本文是对师大无机化学实验教材中的实验方法的一个改进。 Change the open type for the whole closed experimental devices and experimental methods, not only improve the experimental level, but also improve the accuracy of the experimental results and the safety of the experimental process; the same time, can also be used in other dangerous experiments. This article is an improvement on the experimental method in the textbook of Inorganic Chemistry of Normal University.