機器
business
chemical
chemistry
chimney
dark
distillation
distillery
drill
energy
engineer
engineering
environment
equipment
factory
fuel
gas
gasoline
global
heavy
industrial
industry
manufacturing
metal
night
oil
petrochemical
petrol
petroleum
pipe
pipeline
plant
platform
pollution
power
production
refinery
sky
smoke
station
steam
structure
sunlight
sunrise
sunset
technology
tower
tube
twilight