This is how the electric motor transforms electrical energy into mechanical energy.

这就是电动机将电能转化为机械能的过程。

Unlike copper cables, which transmit electrical energy, fiber optic cables transmit light.

而同只能传输电能的铜线缆不同的是，光缆可以传输光。

They directly and efficiently convert electrical energy into muscle contractions.

它们可以直接高效地把电能转化成肌肉收缩。

There is activity every where and a ceaseless thrum of electrical energy.

活动到处存在，电流不停流动。

Today 23 percent of New York State's electrical energy is generated from renewable sources.

现在纽约州百分之二十三的电力来自可再生能源。

The steam travels through pipes to a power plant, where it is converted into electrical energy.

蒸汽通过管道进入一个发电厂, 它在这里被转换成电能。

To answer that question, we first need to examine how solar panels convert solar energy to electrical energy.

为了回答这一问题，首先我们需要明白太阳能板 是怎样将太阳能转化为电能的。

That’s because they use dark sheets of silicon crystals to absorb the sun's rays, then turn them into electrical energy.

再转换成电能太阳能板也变得非常便宜又有效率。

Both of these results, turning mechanical energy into electrical, and electrical energy into mechanical, were remarkable.

这两个结果，将机械能转化为电能，将电能转化为机械能，都是非常了不起的。

The " battery" is the part of the car that stores electrical energy.

” “电池” 是汽车中储存电能的部分。