英文關鍵字
cutter
torch
blaze
cnc
machine
metallurgy
processing
cut
metal
sheet
fiber
laser
cutting
sheetmetal
fabrication
process
engraving
splash
heat
flames
fire
industrial
manufacture
tool
technology
engineering
metalwork
energy
manufacturing
spark
industry
precision
production
steel
working
metalworking
machinery
plasma
machining
light
nozzle
equipment
factory
burn
close
scene
plate
hi-technology