機器
boiler
boilerhouse
central
circulation
construction
control
electric
energy
engineering
equipment
faucet
gas
heat
heater
home
house
hvac
industrial
industry
insulation
interior
maintenance
man
manometer
measuring
metal
modern
pipe
pipeline
plumbing
power
pressure
pump
room
service
steam
steel
system
technician
technology
temperature
thermostat
valve
water
work