集: gather; assemble; collect代数: K理论 algebraic K-theory的: 4次方是 The fourth power of 2 i ...并集: union; sum aggregate; join集代数的交: intersection of set algebra集代数的余: complement of set algebra集代数的公设: postulate of set algebra集代数: algebra of sets; set algebra集论的并集: set theoretic union差集代数: difference set algebra子集代数: algebra of subsets两集合的并集: union of two sets代数的: algebraical; algevraic顶点不相交的并集: vertex disjoint union弱完备化的并集: union of the weak completions代数的代数: algebraic algebra代数的, 代数学的: algebraic代数的李代数: algebraic lie algebra边不相接割集的并集: edge disjoint cut-set union边不相接回路的并集: edge disjoint circuit union代数的定义: definition of algebra代数的方法: algebraic method代数的附加: algebraic adjunction代数的数论: arithmetic of algebras代数的直积: direct product of algebras