機器
activity
barrel
black
blue
building
car
chemical
cloud
construction
container
dark
drill
energy
engineer
engineering
environment
equipment
exploration
factory
fuel
gas
gasoline
global
heavy
industrial
industrial building
industry
manufacturing
metal
oil
petrochemical
petroleum
pipe
pipeline
plant
pollution
power
production
pump
refinery
rig
sky
steel
storage
tank
technology
tree
valve
winter