- 机械: machine; mechanism weapon
- 通风装置: register; ventilating plant; ...
- 通风装置,通风: ventilation
- 机械通风: artificial draft; artificial ventilation; force ventilation; forced draught; forced ventilation; mechanical aeration; mechanical draft; mechanical draught; mechanical ventilation; power ventilation
- 机械通风筒: blowing ventilator
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