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中文摘要：
利用半环上的同余关系，研究了半环类G°I中成员的性质．分别研究了半环类O∩G°NB和O∩G°R中成员的次直积分解，并利用“（2，2）型代数的坚固构架”的概念，证明了半环S∈G°S堤G与Sl中成员的次直积当且仅当S的乘法半群是群与半格的次直积．
英文摘要：
By using the congruences on a semiring, the properties of members of the class G°I of semirings are obtained. The subdirect product decompositions of the members of the classes O∩G°NB and O∩G°R of semirings are studied, respectively. And it is proved that a serniring S in G°Sl is a subdirect product of a member of G and a member of Sl if and only if the multiplicative reduct of S is a subdirect product of a group and a semilattice by using the concept of sturdy frame of type （2,2） algebras.
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