機器
air
background
building
ceiling
circulation
cold
conditioner
conditioning
construction
control
cooling
duct
ducting
ducts
energy
engineer
engineering
equipment
exhaust
factory
fan
heat
home
house
hvac
industrial
industry
installation
interior
maintenance
man
metal
modern
pipe
pipeline
power
recuperation
repair
service
steel
system
technician
technology
temperature
tube
uniform
ventilation
work
worker