Distribution transformers face to customers directly, its operation state is the important component of safe economical operation of the whole distribution network.

配电变压器是将电能直接分配给低压用户的电力设备，其运行状态是整个配电网经济运行的重要组成部分。

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Boiler water treatment is an important measure for ensuring safe and economical operation of boilers and also a key link in scientific management chain of boilers.

锅炉水处理是保证锅炉安全经济运行的重要措施，是锅炉房科学管理的一个十分重要的环节。

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Substation's control and signal system play an important role in the safe, economical running and operation management of the substation, especially for the daily running and control.

变电站的控制与信号系统是实现变电站安全、经济运行和操作管理的必不可少的重要组成部分，特别是对日常的运行控制来说，显得更加重要。

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