Three - phase current protection relay is one of the important forms of protection.

三 段式 电流保护是继电保护测试仪中一种重要的保护形式.

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Three - phase current should be used for large motors.

大型电机应该使用 三相 电流.

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An intelligent PID controller was proposed for a CaC 2 furnace system with three - phase current coupled.

针对 三相 电极电流耦合的电石炉系统,设计出一种智能PID控制器.

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