英文關鍵字
aerospace
automated
blue
boring
close
cnc
cut
energy
engineering
engraving
equipment
factory
fire
flat
heat
hot
industrial
industry
iron
laser
light
line
machine
machinery
manufacture
manufacturing
mechanical
melting
metal
metalwork
modern
nozzle
plasma
precision
processing
production
sheet
space
spark
steel
tech
technology
tool
treatment
welding
work
worker
workshop