英文關鍵字
bubbling
cast
casting
chute
closeup
danger
down
factory
fire
flame
flow
flowing
foundry
furnace
glowing
heat
hell
hot
industrial
industry
iron
lawa
liquid
manufacture
manufacturing
melting
metal
metallic
metallurgical
metallurgy
mold
molten
plant
pour
pouring
production
red
rocks
smelting
smoke
spark
steel
stream
technology
working