機器
ahu
air
air conditioner
air duct
aluminum
boiler
building exterior
built structure
business
chiller
cold
compressor
condensation
condenser
condenser microphone
condition
construction
construction machinery
cool
cooling tower
electric fan
electricity
engine
environment
exhaust pipe
facility
factory
fan
fuel and power generation
fuel pump
heat
industry
machine part
nature
oil pump
order
outdoors
pipe
pollution
power
retail
rowing
sky
station
steam
subway station
technology
temperature
tower
tube
valve
vapor trail
water heater
water pump