aqueduct
chemical
commercial
conduit
electricity
energy
engineering
equipment
field
fossil
fuel
gas
gasoline
generation
heat
huge
hydropower
industrial
industry
iron
line
lines
metal
oil
oilfield
petrol
petroleum
pipe
pipeline
pipes
piping
pollution
power
production
refinery
rig
row
sky
steam
steel
sunset
supply
technology
transport
transportation
tube
tubes
water
定額
Tubes running in the direction of the setting sun. Pipeline transportation is most common way of transporting goods such as Oil, natural gas or water on long distances.の素材 [FY31020039140]
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