分配同余簇是半分配同余簇的真子类,给出了半分配同余簇上的一个重要的相仿于分配同余簇上的结论.
Congruence distributive variety is a proper subclass of congruence semi-distributive variety.An important conclusion on congruence semi-distributive variety to be similar to congruence distributive variety is attained in this paper.