英文關鍵字
alloy
aluminum
burn
casting
craftsman
element
equipment
factory
fire
foundry
furnace
garage
heat
heavy
hot
industrial
industry
ingot
ingots
iron
ladle
lead
liquid
local
melt
melting
metal
metallic
mill
mold
molten
people
plant
pot
pour
production
pure
raw
shape
smelt
spoon
steel
tin
tool
tradition
work
worker
workplace
workshop
zinc