n.每單位

Pressure is force per unit area. 壓力就是電單位面積上的力。

The current is the charge flow per unit time. 電流是每單位時(shí)間流動(dòng)的電荷。

Could you tell me the cost of production per unit? 請你告訴我每件成品的生產(chǎn)成本好嗎？

The drag is a force per unit area of the layer. 拖力是流層單位面積的力。

By the charge density we mean the per unit volume. 所謂的電荷密度是指單位體積的電荷。

We must do everything to raise the per unit yield. 我們要千方百計(jì)提高單位面積產(chǎn)量。