Phone calls cost 20c per unit off-peak.

非高峰时间电话费每单位两角。

《牛津词典》

Protein and carbohydrate have 4 calories per gram, per unit weight.

每克每单位重量蛋白质和碳水化合物产生4卡路里。

youdao

Because these galaxies' mass is spread out over larger areas, they have far fewer stars per unit volume than do conventional galaxies.

因为这些星系的质量分布在更大的区域，它们每单位体积的恒星数量比传统星系要少得多。

youdao

Fat has twice the calories per unit weight that protein or carbohydrate sugar has, as a consequence, has the greatest survival value.

单位重量中脂肪的热量含量,是蛋白质和碳水化合物的两倍,因此,脂肪才是最能维持生存的物质

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

As I mentioned before, fat has twice the calories per unit weight as protein and carbohydrate.

如我之前所说,单位重量中脂肪的热量含量,是蛋白质和碳水化合物的两倍

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

We divide that by the mass, so 0.12 kilograms, that's the mass of a regulation baseball for the major leagues, and the velocity of the baseball is 42 meters per second. So, we can cross out our units doing our unit analysis.

我们用质量来除它，质量为0，12千克，这是大多数联赛规定的棒球质量,棒球的速度为42米每秒,所以，我们可以消去单位,来做单位分析。

麻省理工公开课 - 化学原理课程节选

This portfolio generates the highest return per unit of risk of any portfolio in the universe.

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At the same time, my one person plan had the highest per unit cost.

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Natural gas emits about half as much carbon dioxide per unit of energy as coal.

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