per unit volume短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 每一单位体积 The calculated results show that the charge weight per unit volume based on the tensile theory is identical with the practical one of the standard blasting crater. 计算结果表明，对于标准爆破漏斗，按最大拉应力理论计算的炸药单耗与实际情况基本吻合。 cnki It is the amount of electric charge per unit volume. 是电荷与体积的比值。163