機器
alloy
bit
bits
bore
borehole
borer
boring
chisel
cone
construction
cross
cutter
cutting
drill
drill bit
drillhole
drilling
engineering
equipment
exploration
fuel
gas
gasoline
gauge
hole
industry
instrument
isolated
metal
milling
mining
natural
oil
petroleum
platform
rig
rock
roller
steel
technology
teeth
tool
tooth
torque
tricone
turning
well
white