These can be used to study the rapid processes that can take place when electrons move or change energy.

阿秒光脉冲用于测量电子移动或能量变化的过程。

Patrick has tried to force one of those cell phone camera things on Ove, but he doesn't trust them.

帕特里克想给他装个什么电子移动相册，但欧维信不过这种东西。

Maybe, instead, the electrons themselves were being moved around.

相反，也许电子本身在四处移动。

The spinning magnet causes electrons to move in the wires and produce an electrical current.

旋转的磁铁使电子在导线中移动并产生电流。

Now e mail and cell phones are rapidly replacing the old forms of communication.

现在电子邮件和移动电话正在迅取代旧的通讯方式。

How easy it is for electrons to move around depends on the material.

电子容易移动 取决于材料。我们描述。

It consisted of fast-moving electrons, situated between the two previously known Van Allen Belts.

它移动的电子组成，位于已为人们所熟知的两个范艾伦带之间。

Electric current, anything from static electricity to lightning bolts, is electrons moving from negative to positive.

从静电到闪电的任何电流都是电子从负向正移动。

This moving sea is a big part of what makes metals… metal.

这种移动的电子海是金属的重要组成部分。

And emf, you’ll recall, stands for electromotive force, which is what causes electrons to move and form a current.

电动势，你会记得，代表电动势，这是导致电子移动并形成电流的原因。

The user does this by moving the two sticks on a special electronic surface.

用户通过在一个特殊的电子表面上移动两根棍子来做到这一点。

While the electrons move toward the middle, the positive gas ions head the other way.

当电子向中间移动时， 正气体离子向另一方向移动。

In solid materials, protons stay fixed, but some electrons are free to move around.

在固体材料中， 质子保持固定， 但一些电子可以自移动。

So we’ve got insulators and conductors with free electrons moving around in them.

所以我们有绝缘体和导体， 其中有自电子在其中移动。

These moving electrons are called free electrons.

电子可以自移动，称为 这些移动的电子：电子。

And emf, you'll recall, stands for electromotive force, which is what causes electrons to move and form a current.

你会记得，电动势代表电动势，它是导致电子移动并形成电流的原因。

The electrons that move along an alternating current, on the other hand, periodically and consistently change direction.

另一方面，在交流电中移动的电子会周期性地、持续地改变方向。

After all, the current is made up of negatively charged electrons moving through the wire.

毕竟电流是负向存在的 带电的电子在导线中移动。

And when fast-moving electrons strike something in a vacuum, it generates X-rays.

当移动的电子撞击真空中的某物时，它会产生 X 射线。

They cite China's higher mobile share of e-commerce—90% versus 43% in America (see chart 2).

他们指出中国移动电子商务占比达到90%，远高于美国的43％（见图表2）。