英文關鍵字
plasma
cut
metal
steel
grind
cutter
industry
iron
metalwork
spark
work
workshop
accuracy
automate
automated
automation
burning
cnc
conveyor
detail
drill
engraving
equipment
fabrication
fabricator
factory
flame
heat
heavy
hot
laser
light
line
machine
machinery
manufacture
material
metallurgy
plate
precision
process
processing
production
sheet
technology
tool
welding
workpiece
modern