关系的基本运算有两类：一类是传统的集合运算（并、差、交等），另一类是专门的关系运算（选择、投影、连接、除法、外连接等），有些查询需要几个基本运算的组合，要经过若干步骤才能完成。
网络释义
...对模块的输入信号进行乘或者除 Real-Imag to Complex 将输入的实部和虚部信号转换为复数 信号 Relational Operator （关系运算） 对输入执行指定的关系运算 Rounding Function（圆整函数） 执行普通的数学圆整函数 Sign（符号） 指明输入的正负号 Slider Gain...
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短语
关系运算子 relational operator ; Relational Operators Relational Operators
关系运算符 Relational operators ; Relational ; relation operation ; Relational operator
关系运算的 Metamethods
基本关系运算与 SQL
关系运算与逻辑运算 Relational calculus and Logical operation
分支与关系运算符 branch and relational operator ; BRO
支与关系运算符 branch and relational operator
关系运算模块 Relational
时态关系运算 temporal relational operator
双语例句原声例句
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可以让选择排列生效，影响关系运算符eq、le等。
You can put available collations in effect to impact relational operators eq, le, and so forth.
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通过定义实数区间的关系运算判断策略域之间的关系；
Through defining the relation operation in real number interval, determined the relation between policy fields.
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它可以包括多个使用Python中支持的不同关系运算符的子表达式。
It can be composed of multiple subexpressions that use the different relational operators supported in Python.
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I just want to make mention of this in case there's ever doubt, generally parentheses do solve your problem as an arithmetic but do realize this is some lower level details we'll come back to over time.
是想告诉大家如果你对某些式子的前后运算关系不确定，就加上括号,这都是一些小细节,我们以后还是会再提到的。
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You might very well have done some very accurate math but it doesn't matter, because you did the math in the wrong place.
你可能很好地做完了一些很精确地数学运算,但是没有关系，因为你没有做错,数学运算。
应用推荐
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- 来自原声例句