機器
air
auto
bottle
business
cargo
commercial
compressed
container
cylinder
danger
dangerous
delivery
diesel
economy
energy
environment
equipment
explosive
flammable
fuel
gas
gasoline
industrial
industry
liquid
lpg
metal
oil
petrol
petroleum
pollution
power
pressure
pressurized
propane
refill
refuel
service
steel
storage
supply
tank
tanker
technology
transport
transportation
truck
valve
vehicle