英英释义
Plus and minus signs
- abstract: The plus and minus signs (+ and −) are mathematical symbols used to represent the notions of positive and negative as well as the operations of addition and subtraction. Their use has been extended to many other meanings, more or less analogous.
以上来源于: WordNet
双语例句原声例句权威例句
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Plus and minus signs were used in 1514 in Holland.
1514年，荷兰开始使用加号和减号。
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These correspond to the plus and minus signs that control code folding.
这些小三角对应于控制代码合并的加减符号。
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It can include variables, constants, and operating symbols, such as plus and minus signs.
它能包含变量、常量、运算符，例如加号和减号。
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sa So we have 1 s a, and we're drawing this as having a positive amplitude, but since we have destructive interference we're going to draw 1 s b as having the opposite sign, so we have a plus and a minus in terms of signs.
我们有，我们把这画成一个正的振幅，但因为我们是相消干涉,我们把1sb画成相反的符号，所以我们有一正一负两个符号。
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