例如，在微积分课程中，记下分步积分法的公式并不是特别难。
For example, in a calculus course it's not terribly difficult to memorize the formula for integration by parts for integrals.
本文给出了用定积分的分部积分法求解二重积分的一种方法。
This paper gives a method to solve double integration by integral subsection integration.
文中给出一个算例，其数值结果与直接积分法、精细积分法作了比较，文中方法对结构动力响应计算是十分有效的。
A numerical example is given, the results are compared with direct integration method and precision integration method. It is quite effective for computing the structural dynamic response.
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