機器
ac
air
appliance
brick
building
central
cold
comfort
commercial
compressor
condenser
conditioner
conditioning
coolant
cooling
effective
efficiency
electric
electrical
energy
fan
heat
heater
high
home
house
industrial
industry
metal
modern
pattern
pipe
power
pump
radiator
refrigerant
repair
residential
shovel
snow
spade
system
tool
unit
utility
wall
winter