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

By the charge density we mean the per unit volume.

所谓的电荷密度是指单位体积的电荷。

youdao

It is the amount of electric charge per unit volume.

是电荷与体积的比值。

youdao

They can store about twice as much energy per unit volume.

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By roughly 2008, carbon microfilament capacitive storage devices were able to match the amount of energy stored per unit volume and per unit weight that chemical batteries were capable of.

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The company managed to leverage its pricing at the margin, raising revenue per unit 10% compared with a volume growth of 3% in the quarter.

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