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

这就是电动机电转化为机械过程。

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

这是关于发电机机械转化为电基本原理。

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

这种振动超声波量转化为机械，从而减弱了传回蝙蝠回声。

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

他在1821年进行实验，研究一种电转化为机械置。

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

他学会了电流转化为机械。

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

十年后，他发现了电磁感应，这是关于发电机机械转化为电基本原理。

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

DNA、骨骼和丝绸都具备机械转化为电特性。

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

“Power”最后，还可以指量，尤其是电或机械。

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

球磨机机械塑料研磨成细粉。

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

至于相反转换， 即把机械转化为电，想想那些在你鼓掌时就会亮起灯。

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

霍普金：那种振动声转化为机械，从而减弱了返回蝙蝠回声。

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

这场竞赛不需要机器来制造电力，他说机械动转化为电很简单。

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，产生机械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.

随着电力需求高涨和机械丰富，压电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.

关于电流与磁场，法拉第于1821年在一台电转化为机械置上进行了实验，该置最终演变为电动机。

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.

但从两米高度坠落所具有机械，大约相当于一个保龄球从七层楼高处落下时量。

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

电机吸收电——即流过线圈电流——并在电机转动时其转换为机械。

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).

我们心脏会通过降低心率（泵血速度）和降低血压（泵血力量）来减少机械消耗。

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，例老虎，它们三头肌和肩部肌肉长时间以一种特殊方式收缩，以此来吸收机械并其分散为无害热量。

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，自愈，耗血肌肉组织神奇之处在于它们化学势转化为机械，或运动，仅仅通过做两件事情——收缩和放松。