Take high-tension power lines, for example.

以高压电线为例。

At the next station the cow is subjected to high-voltage electrical stimulation.

在下一站，牛会受到高压电刺激。

Previous attempts to use cardiac muscle power to run pacemakers relied on piezoelectric materials.

之前使用心脏肌肉能量运行起搏器的尝试是依赖于压电材料。

To do all this, though, you need a device called a transducer.

但完成该，不能缺少一台叫做‘压电式换能器'的设备。

" … supplied with current from the Grand Canyon hydro-electric station."

“… … 高压电是由大峡谷水电站供应的。”

The music is also made with the piezo material.

音也是用压电材料制作的。

And the stronger the compression on piezoelectric materials, the larger the voltage generated.

并且对压电材料的压缩越强，产生的电压就越大。

And we thought, OK, let's combine it with a piezoelectric material.

们想，好，们将它与压电材料结合起来。

Transducers are made from arrays of tiny piezoelectric structures that convert electrical signals into ultrasound waves by vibrating at an appropriate frequency.

压电式换能器是由具有‘压电'效应的一系列敏感元件机构组成。敏感元件机构通‘定频'震荡将电信号转换成超声波。

Piezoelectric quartz crystals in the sonar's transmitter vibrated when they were subjected to alternating voltage.

声纳发射器中的压电石英晶体在受到交流电压时会振动。

10. The power keeps fusing in your apartment when you turn on high voltage appliances.

10. 当您打开高压电器时，您公寓的电源一直熔断。

For a simpler example, take a look outside at just about any high voltage power line.

举一个更简单的例子，看看外面的任何高压电源线。

To make a transducer by painstakingly micro-machining a brittle block of ceramic material can take many hours of work, though.

压电式换能器需要用到陶瓷材料，而精密地加工一块精细的陶瓷材料就要耗费几个小时的工作时间。

Piezoelectric materials turn mechanical stress, like pressure, sound waves, and other vibrations into electricity and vice versa.

压电材料将压力、声波和其他振动等机械应力转化为电能，反之亦然。

Dr Zhang and Dr Yang speculated that they could improve matters by arranging for their piezoelectric composites to be more dramatically deformed.

张浩和杨斌推测，他们可以通压电复合材料更加变形的方法改善这个问题。

The power keeps fusing whenever I turn on a high-voltage appliance, like the kettle or my hairdryer.

每当打开高压电器（例如水壶或吹风机）时， 电源就会不断熔断。

Clapping your hands send sound vibrations through the air and causes the piezo element to bend back and forth.

拍手会通空气发出声音振动，并导致压电元件来回弯曲。

But some crystalline materials don't possess a center of symmetry making them candidates for piezoelectricity.

但是一些晶体材料不具有对称中心，这使它们成为压电性的候选者。

Let's look at quartz, a piezoelectric material made of silicon and oxygen.

们看看石英，一种由硅和氧制成的压电材料。

In most non-piezoelectric crystalline materials, the atoms in their unit cells are distributed symmetrically around a central point.

在大多数非压电晶体材料中，其晶胞中的原子围绕中心点对称分布。