英文關鍵字
blast
bright
burned
burnt
chromium
cinder
compound
container
dross
economy
factory
ferroalloys
ferrochromium
fire
flame
flames
flow
foundry
furnace
glow
heat
heavy
hot
industry
infusion
iron
job
jobs
liquid
machine
machines
melt
metal
metallurgy
molten
ore
plant
pot
pouring
production
silico
silicon
smelting
spark
sparkles
sparks
steel
temperature
workshop