排放阀应装在从锅炉底和热水井底到污水井用于导废油废水。
The drain pipes to be installed from the boiler flat and hot water well flat to bilge well for leading the waste oil water.
排放阀应装在从锅炉底和热水井底到污水井用于导废油废水。
The drain pipes to be installed from the boiler flat and hot water well flat to bilge well for leading the waste oil water.
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