英文關鍵字
burn
circular
cnc
construction
cut
cutting
energy
engineering
engraving
equipment
factory
fiber
fiberoptic
fire
flame
flames
heat
hitech
industrial
industry
jet
laser
light
machine
machinery
machines
machining
manufacture
manufacturing
mechanical
melting
metal
metalwork
modern
nozzle
plasma
precision
processing
production
ray
sheet
spark
steel
technology
tool
torch
treatment
workshop