英文關鍵字
oil
industry
petrochemical
gas
plant
chemical
industrial
factory
energy
refinery
environment
fuel
steel
pollution
engineering
manufacturing
petroleum
technology
production
power
pipeline
pipe
metal
tower
industrialplant
supply
chemistry
construction
sky
oilindustry
tank
infrastructure
resources
equipment
design
illustration
shine
worker
stainless
business
coal
insulation
pairs
complex
night
chimney
structure
tube
sustainable
electricity