英文關鍵字
accuracy
action
aerospace
blaze
boring
cnc
cut
cutting
danger
energy
engine
engineering
equipment
factory
fire
flames
flat
gas
heat
hot
industrial
industry
intense
laser
light
machine
machinery
machining
manufacture
manufacturing
mechanical
melting
metal
metalwork
nobody
nozzle
oxyfuel
plasma
precision
process
processing
production
rolls
sheet
spark
steel
technology
tool
worker
working