The problem of traditional multipleintegral is insufficient of student's space graphs thought.
传统的重积分教学问题是学生空间思维的不足。
2
This paper deals with the identification of nonself-balanced system with multipleintegral link.
本文讨论含有多重积分环节的无自平衡系统的辨识问题。
3
By several examples, we illustrated how to use the analytical method to determine the limits of integral in the problem on exchanging the order of multipleintegral.