词汇	Sappan color
释义	Sappan color 苏木色素
随便看	direct summand direct summation method direct summing design direct sum module direct sum of automaton direct sum of finite groups direct sum of ideals direct sum of Lie algebras Direct sum of linear spaces direct sum of modules direct sum of quadratic forms direct sum of representations direct sum of rings direct sum of sets direct sum of unitary representation direct sum representation direct sum resolution direct sums direct sums decompositions direct sum set direct sum space direct sum spaces direct-sum topological space direct switching-in direct switching starter