英文關鍵字
alloy
aluminum
barrel
basic
blast
bright
bucket
capacity
cast
crude
danger
factory
fallow
fire
fireproof
flame
fluid
furnace
fused
heat
heavy
hot
huge
industrial
industry
iron
lava
light
liquid
magma
manufacturing
melted
melting
metal
metallurgical
metallurgy
molten
plant
pour
production
smelting
sparks
steam
steel
stream
technology
temperature
vapor