英文關鍵字
background
bright
closeup
cooling
cylinder
equipment
factory
flowing
foundry
furnace
heat
heavy
high
hot
industrial
industry
installation
iron
jet
material
melting
metal
metallurgical
metallurgy
molding
molten
plant
pour
pouring
production
raw
rotating
smelting
solidification
steam
steel
stream
temperature
texture
water
works