... main traffic station 主通信站 major relay station 主中继站 make-before-break contact 先合后断触点 ...
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major cycle relay station 大转报站
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After operating for over 10 years, the major disadvantage of the installation is the frequent operation of the relay protection, which affects the economic benefits of the power station.
经近十年的运行经验分析得出该集控装置的主要缺点是继电保护联动，影响了电站的经济效益。
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