不同与上两个推论方法,不能把P等同于，也不是P，那是无效的，并不能说P暗指Q，，q，therefore，P，that’s，invalid，and，it’s，invalid，to，say，p，implies，q，，没有P因此没有Q，这两种情况都是不同的。

So, unlike the other two methods of inference Q you can't take P implies q , Q not P therefore not Q but , these two are both above approach.

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在上述条件下，相应的履约保证金无效。

At the above condition, relative P-Bond shall be forfeited.

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对单次针刀治疗后1个月与治疗后3个月有效病例数与无效病例数的统计显示：卡方检验P＜0.05，有显著性差异；

Single knife on 1 month after treatment and treatment of patients 3 months after the effective number of cases and the number of invalid statistics: chi-square test P <0.05, significant difference;

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