機器
automated
engineer
engineering
equipment
factory
industrial
industry
instrument
iron
job
laborer
lathe
machinery
machining
maintenance
man
manual
manufacturing
mechanic
mechanical
mechanician
metal
mill
milling
operative
operator
people
person
plant
precision
process
processing
production
repairman
rotation
service
serviceman
technician
technology
tool
toolroom
turning
work
worker
workman
workshop