英文關鍵字
bright
building
burn
casting
create
crucible
factory
flame
flow
flowing
foundry
furnace
glowing
heat
heavy
high
hot
indoor
industrial
industry
intense
iron
ironworks
irony
liquid
manufacture
melting
metal
metallic
metallurgical
metallurgy
mill
mold
molten
orange
plant
pollute
pour
production
red
slag
smelting
spark
sparks
steam
steel
streaming
technology
temperature
works