機器
advantage
barrel
black
business
construction
craft
crude
domination
donkey
drilling
ecology
economy
energy
equipment
extract
extracting
extraction
facility
fuel
gas
income
industrial
jack
mineral
money
nodding
oil
oilfield
petroleum
pipe
pipeline
platform
power
profit
pumping
raw
rich
rig
rocking
storage
support
technology
tool
unit
well
work