... 振铃切断继电器,呼叫电流切断继电器:ringing-trip relay 振铃切断继电器:ringing trip relay 振铃器测试盘:ringer test panel ...
基于152个网页-相关网页
... connect cut-off relay: 断桥继电器 ringing cut-off relay: 振铃切断继电器 power cut-off relay: 电源切断继电器 ...
基于14个网页-相关网页
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ringing trip relay
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ringing trip relay
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