英文關鍵字
action
blaze
boring
burn
burning
closeup
cut
energy
engineering
engraving
equipment
factory
fire
flame
flat
head
heat
industrial
industry
laser
light
machine
machinery
manufacture
manufacturing
mechanical
melting
metal
metallurgy
metalwork
modern
nozzle
part
plasma
precision
processing
production
programmable
sheet
spark
sparks
steel
tech
technology
tool
treatment
welding
work
working
workpiece