environmental
abstract
architecture
background
blue
building
business
chemical
chemistry
chimney
construction
design
electric
electricity
energy
engineering
environment
equipment
factory
fuel
gas
global
heavy
industrial
industry
internet
man
manufacturing
metal
nature
oil
person
petrochemical
petroleum
pipe
pipeline
plant
pollution
power
production
refinery
sky
station
steam
steel
structure
technology
tower
water
worker
定額
Metal and cement bridge girder and beam on the bottom of structure in shade with obvious rivets. In late afternoon for design and industrial purposes in urban neighborhood or downtown modern city.の素材 [FY310199401846]
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