surge functions meaning in English

激增职能
临时加强兵力的职能

The subsection integral is used to get a simple function at first in the numerical calculation , and boundary integral is realized by gauss integral on each panel and line , then the complexity and isstability as a result of the high frequency surge function can be avoided
数值计算中，首先采用分部积分对被积函数进行简化处理，然后采用高斯积分实现面元和线元上的积分，避免了被积函数为高频振荡函数所带来的数值计算的复杂性和不确定性。