效力

(n) positive effect; efficacy

(v) to offer one's help

effectiveness

validity of association

potency

potence

prove

virtue

vigor

vigour

efficacy

efficacity

force

validity

效力[xiàolì]

-（效劳）renderaserviceto;serve-（事物所产生的有利作用）potence;effect;efficacy:
Thedrughaslostitspotencebybeingexposedtomoisture.这药因受潮失去了效力。
-（约束力）force;effect;avail:
Bothtextsareequallyauthentic.两种文本具有同等效力。
-efficiency;efficacy;effectiveness;vigour;muscle;function
短语效力范围scopeofvalidity效力检查射击{军}verificationfire

对价，承诺被允诺、提供或做成的事物，它能使一项协议成为具有法律效力的契约
Something promised, given, or done that has the effect of making an agreement a legally enforceable contract.

这药没有效力。
The drug was of no effect.

反对党领袖答应提供一个有效力的政治体制。
The leader of the opposition is promising to provide effective government.

弹药学关于弹药的发射、飞行、和效力的研究
The study of the firing, flight, and effects of ammunition.