Here, however, you can have a sign reversal.

这里却可以有相反符号。

youdao

So you see you can never have a sign reversal here.

你们看到，在这里符号不能相反。

youdao

The sign reversal applies only to quantum numbers (properties) which are additive, such as charge, and not to mass, for example.

举例来说正负号只适用于附加量子数，例如电荷，而不是质量。

youdao

Before interpreting Apple's performance as some sign of a wider reversal of fortune, just remember that most of its challenges are on the world stage.

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Any sign of a quickening economic setting triggers a reversal in FRB policy emphasis towards restricting money supply.

FORBES: Let 'Em Beat Up On Banks

The solid price gains Thursday morning are a good sign for the bulls that the potential double-top reversal will not be confirmed and that prices will continue to trend higher.

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