機器
air
appliance
background
blades
blower
circle
circulation
cold
compressor
condition
conditioner
conditioning
control
cool
coolant
cooler
cooling
electric
electrical
electricity
equipment
fan
grid
heat
illustration
industrial
industry
machinery
metal
motion
outside
overlap
pattern
power
propeller
rotate
sheet
steel
system
technology
temperature
turbine
turning
unit
vent
ventilation
ventilator
voltage
window