英文關鍵字
air
big
building
car
circulation
closeup
cold
computer
con
cooling
cpu
detail
duct
ducting
electric
engine
fan
fans
heat
hot
industrial
industry
inside
interior
isolated
machinery
machines
mechanical
motor
office
out
power
powerful
studio
summer
unit
vehicle
vent
ventilation
vents
wind
windy
zoom