英文關鍵字
biofuel
building
chemical
conduit
construction
contemporary
energy
engineering
equipment
extraction
factory
field
fossil
fuel
gas
gasoline
heavy
industrial
industry
line
manufacturing
materials
metal
natural
oil
oilfield
petrochemical
petrol
petroleum
pipe
pipeline
piping
plant
power
pressure
processing
production
pump
raw
refinery
resources
station
steel
storage
structure
tank
technology
valve
well
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