invertibility

This paper is a study on the invertibility of the commutator of scalar-idempotent elements and scalar-involutory elements of a unitary ring.

本文研究在一个有单位的环中两个倍幂等的换位子与两个倍的换位子的性问题。

The reversible gel is a kind of high molecular polymer.It has peculiar thermal invertibility and peculiar thermal sensitivity.

热胶是一种高分子聚物，具用独特的热性。