英文關鍵字
blast
bright
burning
cast
casting
converting
copper
department
equipment
factory
fire
flame
flat
foundry
furnace
glowing
hearth
heat
heavy
hot
house
industrial
industry
iron
job
light
liquid
manufacturing
melting
metal
metallurgical
metallurgy
mill
molten
open
orange
plant
production
red
refractory
release
rolling
shop
smelting
sparks
steel
steelwork
unit
workshop