1、In mathematics, the commutability of two operations means that the order in which they are performed does not affect the result.
在数学中，两个操作的可交换性意味着它们执行的顺序不会影响结果。
2、The commutability of these two substances allows them to be used interchangeably in the experiment.
这两种物质的可交换性使得它们可以在实验中互换使用。