英文關鍵字
air
background
block
building
chimney
control
exterior
fan
flats
hood
house
industrial
industry
iron
metal
metallic
motion
outside
roof
sky
steel
system
technology
top
turbine
ventilation
ventilator
英文關鍵字
air
background
block
building
chimney
control
exterior
fan
flats
hood
house
industrial
industry
iron
metal
metallic
motion
outside
roof
sky
steel
system
technology
top
turbine
ventilation
ventilator