效用

效用 [xiào yòng]

1. ■ effectiveness; efficacy; efficiency; utility; usefulness; avail:

边际效用{经济} marginal utility

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常用词组

1. ■ 效用递减律 law of diminishing utility;

2. ■ 效用等高线 equal-utility contour;

3. ■ 效用论 utility theory; the theory of effectiveness;

4. ■ 效用模型 utility models