This paper points out the variable substitutionmethod of triple integral of elliptical volume and examples its applications.
指出了椭球形区域上三重积分的一科变量替换方法，并说明了其应用。
2
If in writing an article need to input the same words over and over again, with such words, we can use substitutionmethod to speed up the input efficiency.
如果在写的某篇文章中需要反复输入同样的词语时，对待这样的词语，我们则可使用替换的方法加快输入效率。
3
This paper introduces two methods to measure the internal resistance of electric meters, the one is the substitutionmethod and the other is the half range method.