Testing power supply is a kind of advanced power supplies used in precision measurements.

测试电源是一种专供计量检定和精密测试用的高级电源。

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In May 2007, Toby King, a former Navy nuke technician and flight engineer, joined POWER Testing and Engineering Inc. as a field engineer.

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In fact, the military is constantly testing green-power projects, such as a contraption that provides power and purifies water, or even a mobile nuclear reactor.

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Heskey's power was testing a rookie Arsenal defence, which had an average age of 20, but the Gunners should have been even further in front before the break.

BBC: SPORT | Football | Premiership | Birmingham 0-2 Arsenal