英文關鍵字
alloy
aluminum
brightly
burning
cast
castiron
color
control
devil
drop
ductile
effort
engineering
environmental
factory
finances
fire
flame
floor
foundry
freight
fuel
generation
heat
heavy
home
industry
iron
lathe
liquid
lit
manufacturing
melting
metal
metallurgy
mill
molten
natural
orange
phenomenon
pouring
red
smoke
steel
technology
temperature
transportation
vat
yellow