交换运算
双语例句原声例句
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但是，减法运算符是不可交换的；所以，需要两个操作来处理减数和被减数。
The subtract operator, however, is not commutative; therefore, you need two operations to handle the value to be subtracted and the value from which the subtraction will take place.
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该模块是系统数据分析的核心部分，主要完成数据采集和动态数据交换以及数据运算、统计、存储、合理性检查、删除等功能。
This module is the core of system, its functions include data acquisition, dynamic data exchange, data operation, data statistics, data storage, reasonability check and data delete etc.
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静态规划建立了混合整数规划模型， 利用基于线性规划换基运算的支路交换法有效地求解该模型。
The static planning constructs the mixed integer programming model . A branch exchange technique based on the change base of linear programming solves the model effectively.
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But the law of composition is not always commutative.
但是两两结合的运算并不总是可交换的
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