In the second section , we give all the ring congruences on a commutative regular semiring s and show that from the lattice of all full , closed , ideal subsemirings of s to the lattice of all the ring conruences on 5 , there is a lattice isomorphism 首先給出一個(gè)交換正則半環(huán)上的所有環(huán)同余,證明了此半環(huán)的所有滿的、閉的、理想子半環(huán)所形成的格與此半環(huán)的環(huán)同余格同構(gòu)。