This is the so-called "single-phase power circuit" works.

这也就是所谓的“单相电源回路”的工作原理。

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Fit for various small machinery powered by three-phase power supply.

适用于使用三相电源的各类小型机械。

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Voltage protection for electronic and electrical equipment used in low voltage single phase power supply system.

主要用于低压单相电源系统电子电器设备的过电压保护。

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Mr. WHITAKER: You could do a query to identify all parcels with a particular zoning designation within so many feet of three-phase electrical power and so many feet of a water line, and the three properties left to put your business or your school would light up.

NPR: Security Officials Seek to Block Some Online Maps

In 2002 the then centre-left government said it would phase out nuclear power by 2022.

ECONOMIST: Nuclear power

Today, the Swiss cabinet decided to phase out nuclear power through attrition over the next few decades.

FORBES: In Switzerland's Decision to Phase Out Nuclear Power, a Glimpse of the Future?