Also Relay Active annunciator.

还继电器主动报警。

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Also Relay 1 Active annunciator.

还主动报警继电器1。

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A new type Annunciator is put forward in order to avoid disadvantages.

为克服以上不足，提出一种新型剩余电流报警器。

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A new type Annunciator is put forward in order to avoid disadvantages.

为克服以上不足，提出一种新型剩余电流报警器。

youdao