principle of invariance

例句：

1. 1.The principle of invariance is fundamental to the study of physics.
   不变性原理是物理学研究的基础。
2. 2. The law of invariance states that all physical laws are consistent with each other.
   不变性定律指出，所有的物理定律都是相互一致的。
3. 3.Invariance is a concept that applies to any situation where the same conditions lead to the same outcome.
   不变性是一个适用于任何情况的概念，其中相同的条件导致相同的结果。