機器
architecture
blue
chemical
chemistry
chimney
cloud
cloudy
company
complex
diesel
economy
electricity
energy
engineer
environment
factory
fuel
fumes
furnace
gas
gene
generator
hazard
heat
heavy
industrial
industry
light
machinery
metal
oil
petrol
petroleum
pipe
plant
pollution
power
powerplant
production
red
refinery
resource
smog
steel
structure
substance
technical
tower
toxic
work