機器
boiler
boilerhouse
business
chemical
circulation
clock
communication
construction
control
electricity
energy
engineering
equipment
factory
fuel
gas
gauge
heat
heater
indicator
indoors
industrial
industry
instrument
liquid
maintenance
manometer
measure
measurement
metal
meter
methane
number
oil
outdoor
pipe
pipeline
plumbing
power
pressure
production
pump
service
steel
system
technology
temperature
thermostat
tool
tube
valve
water