opposite sign

基本解释

Or to try to get the deviation to become of the opposite sign.
或者让这个偏离,变个符号。
It is found that opposite sign dislocations appear on the slip plane immediately ahead of the crack tip.
结果指出，在紧靠裂纹顶端的滑移面上出现和裂纹位错异号的位错。
All the physical properties should be identical except for the optical rotations of the two isomers (enantiomers), which are of opposite sign.
这两个异构体（对映体）除了旋光度有相反的符号之外，其他所有的物理性质都应该是完全相同的。

So I changed the colors here to show that these are 2 p orbitals with an opposite phase or an opposite sign.
我这里换了一种颜色,表示2p轨道,不同的相位或者是正负号。
麻省理工公开课 - 化学原理课程节选
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。
麻省理工公开课 - 化学原理课程节选

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