英文關鍵字
caucasus
concept
crude
danger
drill
drilling
ecology
energetics
energy
equipment
extracting
field
fossil
fuel
gas
gasoline
geology
industrial
industry
jack
krasnodar
kuban
machine
mechanism
metal
oil
oilfield
oilwell
petrochemical
petroleum
pipeline
pollution
pump
pumping
pumps
resource
rig
rocking
russia
south
technology
territory
unit
well
working