marking equivalence

• 标识等价类

marking equivalence的用法和样例：

例句

1. Equivalence partitioning is a much more formalized method of test case design.
   等价类划分是一个更加形式化的设计测试用例的方法。
2. Every group can be partitioned into equivalence classes called conjugacy classes.
   所有群都可以划分成叫做共轭类的等价类。