英文關鍵字
assembly
building
cnc
construction
cut
cutter
cutting
energy
engineering
equipment
factory
fire
flame
heat
heavy
hot
industrial
industry
iron
job
laser
light
line
machine
machinery
manufacture
manufacturing
material
melting
metal
metallic
metallurgy
metalwork
plant
plasma
plate
power
production
spark
sparkles
sparks
steel
technology
tool
welding
work
workshop