機器
background
building
business
chemical
chemistry
chimney
company
construction
distillery
energy
engineering
environment
equipment
estate
factory
gas
gasoline
hydrocarbon
industrial
industry
lighting
manufacture
manufacturing
metal
monomer
night
oil
petrochemical
petrol
petroleum
pipe
pipeline
plant
pollution
power
process
production
refinery
sky
smoke
steam
storage
sunset
tank
technology
tower
tube
twilight
vessel