基本解释[数学]组合流行组合流形组合廖词组短语短语combinatorial homology manifold 组合同调流形smoothable combinatorial manifold 可光滑组合流形closed combinatorial manifold [数]闭组合流形orientable combinatorial manifold [数]可定向组合流形combinatorial manifold更多词组专业释义数学组合流行组合流形组合廖