英文關鍵字
aluminum
blast
casting
copper
equipment
factory
fire
flame
flow
flowing
foundry
furnace
glowing
heat
heavy
high
hot
industrial
industry
iron
light
liquid
manufacturing
material
melting
metal
metallurgical
metallurgy
mill
molten
plant
pouring
production
smelting
sparks
steel
still
streaming
temperature
tongs
vat
whitehot
works
workshop