英文關鍵字
building
business
chemical
chemistry
chimney
clouds
construction
distillery
energy
engineering
environment
equipment
exterior
factory
fuel
gas
gasoline
global
heavy
industrial
industry
manufacturing
metal
natural
night
oil
people
petrochemical
petrol
petroleum
pipe
pipeline
plant
pollution
power
production
refinery
sky
smoke
smokestack
station
steel
storage
structure
supply
tank
technology
tower
toxic
tube