invariant point的用法和样例：
例句
- In this paper, we study the nonparametric statistical inference for one distribution change point.
摘要本文研究了连续分布函数变点的非参数统计推断问题。 - For periodic and quasiperiodic chain, there is more than one phase transition point at some parameter region because of the competition between the spin cluster and anisotropy.
对于周期和准周期链，由于各自旋集团和各向异性之间的竞争，模型在某些参数范围可能出现两个以上的相变点。
