機器
air
boiler
closeup
compressor
control
device
energy
engineering
equipment
factory
fitting
fuel
gas
gauge
heating
high
hydraulic
indicator
industrial
industry
instrument
manometer
manometers
measure
measurement
measuring
metal
meter
oil
part
pipe
pipeline
pipes
plant
power
pressure
process
pump
service
station
steel
system
technology
tool
tube
valve