英文關鍵字
accuracy
action
automated
automobile
burning
business
closeup
cnc
computer
construction
cut
energy
engineering
engraving
equipment
fabrication
fabricator
factory
flame
flames
heat
industrial
industry
iron
laser
light
machine
machinery
machining
manufacture
manufacturing
materials
melting
metal
metalwork
motion
order
plasma
precision
process
processing
production
robot
sheet
space
steel
technology
tool
work