機器
barrel
business
construction
crude
derrick
diesel
drill
drilling
economic
energy
environment
equipment
exploration
extraction
fossil
fuel
gas
gasoline
generate
generation
industrial
industry
machinery
mine
oil
oil industry
oil pump
oil rig
oilfield
oilwell
petrol
petroleum
pipe
pipeline
platform
pollution
power
production
pump
pumpjack
raw
refinery
resource
rig
supply
symbol
technology
valves
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