The DC operation power supply system is a kind of important equipment in substation.

直流操作电源系统是变电站中的重要设备。

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The DC operation power supply system is a kind of important equipment in transformer substation.

直流操作电源系统是变电站中的重要设备。

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To warrant reliability of DC operation power electrical supply, all-round monitoring to parameter of storage battery operation is necessary.

为保证直流操作电源供电的可靠性，必须对蓄电池组运行参数进行全面的监测。

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It is thanks to this co-operation, says DC Sadler, that month on month, almost without exception, the number of people receiving drugs treatment across the North East has gradually increased.

BBC: NEWS | UK | England | Treating causes of drug addiction

As scholar, Walid Phares, has rightly pointed out in an interview with Fox News, "in its operation against embassies in DC, Iran's regime subcontracted cartels to strike, so that the Ayatollahs would escape international responsibility".

CENTERFORSECURITYPOLICY: Center For Security Policy