英文關鍵字
abstract
aeration
air
background
blade
blades
blow
blower
circles
cool
cooling
dark
design
dirty
electric
engine
equipment
fan
filtration
industrial
inside
interior
light
metal
movement
object
power
propeller
room
rotate
rotating
rotor
shadow
spin
steel
technology
turbine
turning
ventilation
ventilator
wall
wind