英文關鍵字
automated
blaze
burn
cnc
cut
cutting
danger
energy
engineering
equipment
factory
fire
gas
heat
high
industrial
industry
iron
laser
light
machine
machinery
machining
manufacture
manufacturing
mechanical
melting
metal
metalwork
modern
plasma
precision
processing
production
sheet
spark
steel
technologies
technology
tool
use
work
working
workshop