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依赖于材料。

She doesn't care about piezoelectric micromachined ultrasonic transducers.

她并不关心微加工超声换能器。

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

但完成该过程，你不能缺少一台叫做‘式换能器'的设备。

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

“… … 高由大峡谷水站供应的。”

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

在下一站，牛会受到高刺激。

And when McDreamy — may he rest in peace — finally bursts out those paddles, that high-voltage shock isn't turning the heart back on — it's actually stopping it.

当 McDreamy——愿逝者安息，最终启动心脏击时，高击并没有使心脏重新启动，而停止了跳动。

Conversely, the reduced light pollution saves over a billion birds each year whose migrations were disrupted by blinking communication tower lights and high-tension wires.

反过来说，每年光污的减少会拯救超过十亿只鸟类，它们的迁徙曾受到通信塔灯闪烁和高线的干扰。

More than half the country was left without electricity after a fire west of Buenos Aires hit high-tension power lines and put a nuclear power station offline.

布宜诺斯艾利斯西部的一场大火烧毁了高线，导致一座核站停运，阿根廷一半以上的区陷入断状态。

Take high-tension power lines, for example.

以高线为例。

However GE, a large American conglomerate, is now proposing to make ultrasound transducers by " additive" manufacturing—or three-dimensional printing, as it is also known.

而GE作为美国的一个庞大的企业集团正考虑采用‘对比添加式'的加工流程（或者又称大家所熟悉的‘3D印刷'）来加工超声波式换能器。

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，他们可以通过让复合材料更加变形的方法改善这个问题。

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

式换能器由具有‘'效应的一系列敏感元件机构组成。敏感元件机构通过‘定频'震荡将信号转换成超声波。

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

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

The waves are then reflected back from areas where there is a change in density and on their return the transducer works in reverse, producing a signal which the scanner can process into a digital image.

超声波会从密度发生变化的介质反射回来，这时式换能器会反向操作产生信号，再经过扫描器的处理，最后进行数字成像。

The third layer is a matrix of piezoactivators.

第三层由激活器组成的矩阵。

His stomach was screeching and his nerves dancing with high voltages.

他的肚子在叫，神经像通了高一样跳个不停。

The output has really exceeded five micro watts while most pacemakers require at least 10 Doctor Jang and Dr. Young speculated that they could improve matters by arranging for their pizza electric composites to be more dramatically deformed First.

输出功率真的超过了5微瓦，而大多数起搏器至少需要10微瓦。姜博士和杨博士推测，通过让他们的复合材料发生更剧烈的变形，可以改善这一情况。

First we fill them up with the piezoelectric material, which is represented in yellow in the bottom figure, and then we fill it up with the stimuli-responsive material that is the light blue in the bottom figure.

首先我们用材料（在底部图中用黄色表示）填充它们，然后再用刺激响应材料（在底部图中用浅蓝色表示）填充。

These generate power and send it to a control board that operates a pair of piezoelectric actuators – clever materials that work a bit like a muscle and contract when a voltage passes across them.

它们产生能并将其发送到控制板，该控制板操作一对致动器 - 聪明的材料有点像肌肉，当通过它们时会收缩。

UNIDENTIFIED MALE: These power lines are called KV lines and it's a huge concern for us, to have a high amount of electricity, hundreds of thousands of volts in those KV lines.

未识别的男子：这些输线被称为千伏线路，对我们来说个巨大的担忧，因为这些千伏线中承载着高达数十万伏的高。