Adjective:

1. (of a binary operation) independent of order; as in e.g.

   "a x b = b x a"
   

COMabbr.计算机输出缩微胶片(=computer-output microfilm)abbr.组件对象模型(=Component Object Model)COMSECn.通信保密措施

1. Successive Adaptations are merged in a commutative and associative way.
   通过一种可交换的相关联的方式来合并连续的适配操作。
2. These are shared concerns in commutative algebra, algebraic geometry, number theory and the computational aspects of these fields.
   这些是在交换的代数，代数学的几何学，数论和这些领域的计算的方面方面的被分享的关心。