用opposite sign造句子，“opposite sign”造句

A pair of electric charges or magnetic poles, of equal magnitude but of opposite sign or polarity, separated by a small distance.

It is found that opposite sign dislocations appear on the slip plane immediately ahead of the crack tip.

At the end of month, when Mercury moves into Scorpio, your opposite sign, there's an emphasis on the intellectual side of things.

High leptin levels relay the opposite signal.