保等价部分变换半群的变种半群
the variant semigroups of partial transformation semigroup preserving an equivalence
右下三角等价形式
Right lower triangular equivalent form
RIJNDAEL S盒的等价生成方法
way of generating RIJNDAEL S -box
表示的等价
equivalence of representations
不变度量的等价
equivalence of invariant metrics