機器
air
background
blade
blow
blower
breeze
circle
circulation
climate
compressor
conditioning
cool
cooler
cooling
design
detail
electric
electricity
engine
equipment
fan
fragment
grey
grid
heat
industrial
industry
machinery
metal
motor
object
office
pattern
photo
power
propeller
rotate
round
summer
system
technology
turbine
unit
vent
ventilation
ventilator
white
wind