機器
activity
black
blue
building
business
chemical
chemical plant
construction
container
drill
energy
engineering
environment
equipment
extraction
factory
fossil
fuel
gas
gasoline
industrial
industry
liquid
manufacturing
metal
methane
natural
oil
petrochemical
petrol
petroleum
pipe
pipeline
plant
pollution
power
production
refinery
repair
site
sky
steel
storage
tank
technology
tree
tube
wealth
winter