improper integral的用法和样例：
例句
- A priori point-wise estimations are established for bounded functions satisfying a new class of nonlinear inequalities involving improper integrals.
摘要对满足一类新的含反常积分非线性不等式的有界函数建立了先验逐点估计。 - In this paper, reciprocation, frequently used in indefinite integral calculation, was applied in definite and broad integral calculation.
将不定积分计算中经常使用的例代换，应用于计算多余定积分与广义积分，在某些情况下，使计算大为简化。
