势能差的单位是什么，伏特。
或者用我最喜欢的单位，就是19。80电子伏特。
就是一单位的电子伏特。
电子伏特不是，就是一单位的电子伏特。
最明显的系统就是基本的MKS单位，用伏特、安培和欧姆表示。
The most obvious set is simply the basic MKS units of volts, amperes and ohms.
静电磁场以每米具有的安培单位衡量(A/m)，但是通常以相应的电磁感应单位特斯拉(T)或毫伏特斯拉(mT)表示。
A static magnetic field is measured in units of ampere per metre, (A/m) but is usually expressed in terms of the corresponding magnetic induction measured in units of tesla, (T) or millitesla (mT).
我们用以表示电压和电流的单位分别为伏特和安培。
The units in which we show voltage and current are volt and ampere respectively.
如果伏特这个单位过大，我们就用毫伏或微伏。
Where the volt is too large a unit, we use the millivolt or microvolt.
电压单位等于千万分之一伏特。
前人们所做的就是他们说让我们确定，一个能量单位用来代表一单位电荷，加速穿过形成的一单位电势差，我们叫它电子伏特。
What people did is they said let's define a unit of energy that represents a unit charge accelerated across a unit potential difference, and let's call that the electron volt.
前人们所做的就是他们说让我们确定，一个能量单位用来代表一单位电荷，加速穿过形成的一单位电势差，我们叫它电子伏特。
What people did is they said let's define a unit of energy that represents a unit charge accelerated across a unit potential difference, and let's call that the electron volt.
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