So they work well in places like electric motors in hybrid vehicles or generators for wind turbines.

VOA: special.2010.10.08

So, if instead you put your particle somewhere down here on the electric field, or on the wave, the electric field will now be in the other direction so your particle will be pushed the other way.

还有方向，所以如果,你把粒子放在这下面，电场的方向相反,粒子会朝另一个方向运动。

麻省理工公开课 - 化学原理课程节选

So, instead of having the periodic variation of water, or the periodic variation of air density here we're talking about an electric field.

不像水或者空气密度的,周期变化，我们这里,讨论的是电场。

麻省理工公开课 - 化学原理课程节选

These Taos Indians live in the ancient adobe rooms as their ancestors did centuries ago -- without any running water or electric power for lights.

VOA: special.2010.07.05

You've got a magnetic field, maybe even magnetic susceptibility, the electric field. We're not going to worry about these magnetic fields or electric fields in this class So, pretty much we're going to focus on this set of variables here.

你也会引入磁场，或许甚至磁化率，以及电场，我们这堂课不需要关心,这些磁场或,电场之类的东西,基本上我们只关注,这里的一组变量。

麻省理工公开课 - 热力学与动力学课程节选

An electric motor helps the operator pull a heavy load or go up a hill.

VOA: special.2009.05.11

The $41,00 price tag comes with a $7,500r tax credit, making it cost competitive with other electric or hybrid vehicles.

VOA: standard.2010.07.30

People who aren't connected to the electric grid often get their light from candles or burning wood.

VOA: standard.2009.12.13