One of the technologies he mentioned was solar shingles, a lesser-known photovoltaic energy source that looks like regular roofing shingles but could power homes more cheaply than common solar panels.

其中提到的一项技术就是太阳瓦，一种较少人知道的观点能源，类似于常规的瓦片但是却能用笔通常的太阳能板更廉价的条件为家庭供电。

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Pulsed arc welding power source by thyristor DC chopper consists of common DC arc welding power source and DC chopper.

采用晶闸管直流斩波器的脉冲弧焊电源是由普通的直流弧焊电源，附加晶闸管直流斩波器组成的。

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To verify the accuracy and reliability of the system, contrast tests on reference sound power source and small motor are performed respectively in a semianechoic chamber and a common room.

为了验证噪声检测系统的精度和可靠性，在半消声室和普通房间内，分别对标准声功率源和小型电机作声功率对比测量试验。

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Personally, I just think that solar makes the most sense as an energy technology, and the tech innovations in solar power are such that I expect it to be the most common source of power before the century is out.

FORBES: The Cost of Solar Power Is Expected to Decline 50% Over the Next Decade