... relay operating frequency 继电器工作频率 electrical apparatus operating frequency 电器操作频率 In Operating Frequency Range 在工作频段内 ...
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电器操作频率
Operating frequency of electrical appliances
以上为机器翻译结果，长、整句建议使用 人工翻译 。
当电流超过限制值时，过负荷电流继电器自动保护振荡管和整流器，同时可以避免由不当操作所引起的频率漂移。
The over-current relay works to protect oscillation tubes and rectifier, when the current exceeds its limits. Frequency deviation caused by faulty operation is also prevented.
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