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

这就是动转化为的过程。

It's a fundamental principle regarding how generators, which change mechanical energy into electrical energy, operate.

这是关于发如何转化为的基本原理。

That vibration converts sound energy to mechanical energy, which muffles the echo that gets back to the bats.

这种振动超声波的量转化为，从而减弱了传回蝙蝠的回声。

He was conducting experiments in 1821 on a device that changed electrical energy into mechanical energy.

他在1821年进行实验，研究一种转化为的装置。

And he learned how to change that current into mechanical energy.

他学会了如何流转化为。

Ten years later, he discovered electromagnetic induction, a fundamental principle regarding how generators, which change mechanical energy into electrical energy, operate.

十年后，他发现了磁感应，这是关于发如何转化为的基本原理。

DNA, bone, and silk all have this ability to turn mechanical energy into electrical.

DNA、骨骼和丝绸都具备转化为的特性。

" Power, " finally, can mean energy, especially electrical or mechanical energy.

“Power”最后，还可以指量，尤其是或。

The ball mill's mechanical energy turns the plastic into a fine powder.

球磨的塑料研磨成细粉。

For the opposite transformation, converting mechanical energy to electrical, consider the lights that turn on when you clap.

至于相反的转换， 即把转化为，想想那些在你鼓掌时就会亮起的灯。

That vibration converts sound energy to mechanical energy, which muffles the echo that gets back to the bats.

霍普金：那种振动声转化为，从而减弱了返回蝙蝠的回声。

The competition will not require the machines to produce electrical power. He says changing the mechanical kinetic energy into electrical energy is easy.

这场竞赛不需要器来制造力，他说动转化为很简单。

As we use our leg muscles to push the pedals, the mechanical energy generated is transferred to the bicycle.

当我们运用腿部肌肉去踩踏板时，产生的就被转移到了自行车上。

And piezoelectric devices may become even more common, since electricity is in high demand and mechanical energy is abundant.

随着力需求的高涨和的丰富，压设备可会变得更加普及。

Regarding electric currents and magnetic fields, Faraday conducted experiments in 1821 on a device that changed electrical energy into mechanical energy, eventually becoming the electric motor.

关于流与磁场，法拉第于1821年在一台转化为的装置上进行了实验，该装置最终演变为动。

But falling from a height of just two  meters has about the same mechanical energy as a bowling ball dropped from  a 7 story building.

但从两米的高度坠落所具有的，大约相当于一个保龄球从七层楼高处落下时的量。

Motors take electrical energy – so, the current running through a coil of wire – and convert it into mechanical energy as the motor turns.

吸收——即流过线圈的流——并在转动时其转换为。

Our heart would use up less mechanical energy by reducing our pulse rate (the speed it pumps) and reducing blood pressure (the force it pumps).

我们的心脏会通过降低心率（泵血的速度）和降低血压（泵血的力量）来减少的消耗。

In quadrupeds, like the tiger, their tricep and shoulder muscles contract in a long gait in a special way that absorbs the mechanical energy and disperses it as harmless heat.

偶足类动物，例如老虎，它们的三头肌和肩部肌肉长时间以一种特殊的方式收缩，以此来吸收并其分散为无害的热量。

The amazing thing about your complicated, self-healing, blood-guzzling muscle tissues is that they turn chemical potential energy into mechanical energy, or movement, simply by doing two things — contracting and relaxing.

你复杂的，自愈的，耗血的肌肉组织的神奇之处在于它们化学势转化为，或运动，仅仅通过做两件事情——收缩和放松。