英文關鍵字
chemical
chemistry
chimney
commodity
company
complex
concept
container
deposit
diesel
economy
electricity
energy
engineering
environment
exterior
factory
fuel
gas
generation
generator
hazard
heavy
industrial
industry
light
machine
machinery
metal
nobody
oil
old
petrol
pipe
plant
poland
pollution
power
production
refinery
smog
steel
substance
technology
work