英文關鍵字
raw
steel
process
melt
liquid
metallurgy
manufacture
metal
workshop
sparks
machinery
molten
glow
refractory
flames
industry
metalcasting
temperature
blast
incandescent
workers
factory
manufacturing
labor
crafting
equipment
pouring
casting
craftsmanship
material
furnace
metalwork
steelwork
safety
ingot
smelter
production
shaping
innovation
foundry
engineering
heat
alloys
steelmaking
forge
steelworks
iron
occupational
industrial
heavy
ironwork
hot
fabrication
smelting