機器
adult
automated
center
cutter
cutting
drill
engineer
engineering
equipment
experienced
factory
fitter
industrial
industry
instrument
lathe
machinery
machining
maintenance
male
man
manufacture
manufacturing
mechanic
mechanical
metal
metalwork
metalworking
milling
operative
operator
person
precision
production
service
steel
technician
technology
tool
turning
work
worker
workshop
young