機器
background
blue
construction
crude oil
crude oil tanker
derrick
dig
drill
drilling
ecology
employment
energy
engine
equipment
extraction
facility
field
frame
fuel
gas
gasoline
hard
industrial
industry
jack
land
mechanical
natural
oil
oil field
onshore
output
petroleum
power
production
raw material
rig
shale
site
sky
station
steel
tall
technology
tool
tower
transportation
unit
well