機器
business
chemical
chemistry
chimney
color
construction
distillation
distillery
energy
engineer
engineering
environment
equipment
factory
fuel
gas
gasoline
global
industrial
industry
manufacturing
metal
night
oil
petrochemical
petrol
petroleum
pipe
pipeline
plant
pollution
power
production
refineries
refinery
sky
smoke
stack
steam
steel
storage
structure
sunset
supply
technology
tower
tube
worker
workers