機器
air
background
bottle
close
compressed
container
control
cylinder
cylinders
energy
equipment
fuel
gage
gas
gauge
helium
home
hose
hospital
hydrogen
industrial
industry
instrument
isolated
lab
laboratory
manometer
measure
measurement
medical
metal
nitrogen
object
oxygen
pressure
propane
regulator
scale
silver
steel
storage
tank
technology
tool
tube
up
valve
welding
white