英文關鍵字
blast
blastfurnace
bright
container
drop
engineering
factory
fire
flame
foundry
framework
fuel
furnace
hearth
heat
heavy
hot
industrial
industry
iron
lathe
line
liquid
lit
melting
metal
metallurgical
metallurgy
mill
mining
molten
natural
open
openhearth
orange
ore
pouring
production
red
release
smelting
sparkles
sparks
steel
steelmaker
stove
technology
unit
workshop
yellow