英文關鍵字
actions
alloy
blast
bright
brightly
bronze
burned
burner
burning
burnt
chromium
cinder
compound
construction
container
conveyor
dark
dross
economy
effort
equipment
factory
ferroalloys
ferrochromium
ferrous
fire
flame
flow
flowing
foundry
fumes
furnace
glow
glowing
gold
heat
heavy
hot
industrial
industry
infusion
iron
job
ladle