DC voltmeter PA2: the secondary DC current exported by indicating device.

直流电压表pa 2：指示设备输出的二次侧直流电流。

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It can improve the reliability and quality of the high voltage DC electrical system of airplane to adopt modular power supplies to construct a secondary distributed power system.

采用模块电源构成飞机高压直流电气系统的二次电源分布式系统，可提高供电可靠性和供电质量。

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DC power is a very important secondary equipment in substation, its performance and quality will have a direct bearing on the stable operation of power grids and safety equipment.

变电站直流电源是变电站非常重要的一种二次设备，其性能和质量的好坏直接关系到电网的稳定运行和设备安全。

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Though the demand for games in Arlington and Indy are much higher than for games in Los Angeles and DC, the secondary ticket prices are considerably cheaper in Arlington and Indy because of the vast differences in seating capacities.

FORBES: Arlington, Indy Regionals Enjoy Greatest Demand Yet Lowest Secondary Ticket Prices