片语
basic operation[计] 基本操作;[数] 基本运算
elementary line operation初等行变换
elementary algebraic operation基本代数运算
Elementary Operation Skill基本操作技能
machine dimensions elementary operation计算机基本操作
elementary rom operation初等行变换
elementary row operation[数] 初等行运算
elementary operation of matrix矩阵的初等变换
elementary morphism operation初等运算