• 排放装在锅炉热水井底污水用于废油废水。

    The drain pipes to be installed from the boiler flat and hot water well flat to bilge well for leading the waste oil water.

    youdao

  • 排放装在锅炉热水井底污水用于废油废水。

    The drain pipes to be installed from the boiler flat and hot water well flat to bilge well for leading the waste oil water.

    youdao

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