機器
automated
bolt
boring
cutter
cutting
detail
drilling
engineer
engineering
equipment
factory
fitter
gear
hand
industrial
industry
instrument
lathe
machinery
machining
maintenance
manufacture
manufacturing
mechanic
mechanical
metal
metal machining
metalwork
metalworking
mill
milling
milling machine
old
process
processing
production
rod
rotation
settler
setup
shop
steel
technology
thread
tool
tooling
tools
turning
worker
workman
workshop