- natural ventilation equipment
- 自然通风: perflation; natural draft; n ...
- 装置: installation; device; appara ...
- 通风装置,通风: ventilation
- 自然通风: funnel draft; funnel draught; natural aeration; natural convection; natural draft ventilation; natural draft(ventilation); natural draught; natural ventilation; natural-draft; natural-draught; naturalventilation
- 自然通风井: airshaft
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