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

本文研究有单位元环中两倍幂等元换位与两倍对合元换位逆性问题。

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

热逆凝胶是种高分聚合物，具用独特热逆性。