It is the amount of electric charge per unit volume.

是电荷与体积的比值。

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

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