Fire hydrant manual warning button besides holding wire, but also needs to open the pump reply line to the pump house.

消水栓脚动报警按钮除旌旗灯号线中，借需求启背鲐问线至泵房。

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Fire hydrant manual warning button besides holding wire, but also needs to open the pump reply line to the pump house.

消水栓脚动报警按钮除旌旗灯号线中，借需求启背鲐问线至泵房。

youdao