格的直积 meaning in Chinese

direct product of lattices

In this dissertation , we characterize the congruences on a strong semilattice of semigroups by the congruences on those semigroups and prove that a sublattice of the direct product of the lattices of congruences on those semigroups is isomorphic to a sublattice of the lattice of congruences on the strong semilattice of semigroups
本文，我们主要利用一族半群上的同余刻划其强半格上的同余，并讨论这族半群的同余格的直积的子格与其强半格上的同余子格的关系。