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字词 效用
释义 效用 [- yònɡ]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utility theory; the theory of effectiveness效用模型utility models
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更新时间:2025/4/26 7:16:01