This is a minus sign.

这是一个减号。

youdao

So, and there's a minus sign here.

这里有个符号。

youdao

I therefore have to give it a minus sign.

我必须给它，一个负号。

youdao

It says, if you pull it to the right, so that x is positive, the spring will exert a force which is in the negative direction; that's why you have a minus sign.

就是说,如果你向右拉,x 取正值,弹簧产生的力方向为负,这就是这里用负号的原因

耶鲁公开课 - 基础物理课程节选

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

To make a muuvtag, you put a PLUS sign in from of something you like, or a MINUS sign in front of something you dislike.

FORBES: A New Social Media Muuver And Shaker

In an inflationary age it no longer means anything to look at a quarterly statement to see if there is a plus sign or a minus sign next to the return box.

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If your item is more than one word, you just close the phrase with a plus or minus sign.

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