機器
auto
automated
automobile
cargo
container
control
crisis
cylinder
delivery
dial
diesel
distribution
energy
engine
equipment
factory
fill
fire
fossil
freight
fuel
gas
gasoline
grey
heavy
horizontal
hose
image
industrial
manufacturing
motor
oil
petrol
petroleum
pipe
pipeline
portable
pressure
price
pump
retail
risk
service
stack
stainless
station
storage
tank
tube