機器
blue
boiler
chemical
chemistry
chimney
construction
ecology
electricity
energy
engineering
environment
factory
field
fuel
gas
gasoline
global
heavy
industrial
industry
manufacturing
metal
oil
petrol
petroleum
pipe
pipeline
plant
pollutant
pollute
pollution
power
production
refinement
refinery
sky
smoke
steam
steel
storage
structure
sustainability
sustainable
tank
technology
tower
worker