字词 | 效用 |
释义 | 效用 xiào yòng effectiveness; efficacy; efficiency; utility; usefulness; avail: 边际效用{经济} marginal utility 效用递减律 law of diminishing utility; 效用等高线 equal-utility contour; 效用论 utility theory; the theory of effectiveness; 效用模型 utility models |
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