機器
aerospace
automated
business
cnc
control
copy
cut
cutting
detail
energy
engineering
engraving
equipment
fabrication
factory
flame
foundry
heat
industrial
industry
iron
laser
light
line
machinery
manufacture
manufacturing
mechanical
melting
metal
metallurgy
metalwork
milling
modern
plasma
precision
process
processing
production
sheet
space
spark
steel
tech
technology
tool
treatment
work
worker