機器
accuracy
alloy
automated
business
chuck
closeup
construction
control
cutter
detail
drilling
engineering
equipment
factory
gear
hard
heavy
industrial
instrument
iron
job
labor
lathe
man
manufacturing
mechanical
metal
metalwork
milling
modern
occupation
operator
part
plant
precision
processing
production
professional
safety
stainless
steel
technician
technology
tool
turning
work
workplace
workshop