per unit volume

• 每一单位体积

per unit volume的用法和样例：

例句

1. The mass of one unit of volume of a material is called its density.
   物质单位体积的质量叫做密度。
2. Within the remainder of the dielectric the net charge per unit volume remains zero.
   在电介质的其余部分，单位体积的静电荷仍为零。
3. The mass of one unit of volume of a material is called its density.
   物质单位体积的质量叫做密度。
4. Within the remainder of the dielectric the net charge per unit volume remains zero.
   在电介质的其余部分，单位体积的静电荷仍为零。