機器
background
barrel
black
business
construction
cross
crude
derrick
drill
drilling
earth
ecology
energy
engineering
environment
equipment
exploration
extraction
field
fossil
fuel
gas
gasoline
icon
illustration
industrial
industry
isolated
mining
natural
oil
oilfield
petrol
petroleum
pipe
pipeline
platform
power
production
pump
refinery
resource
rig
soil
symbol
technology
tower
white
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