英文關鍵字
belt
blast
bright
burning
cast
casting
conveyor
energy
explosion
factory
ferrous
fire
fireplace
flame
flat
flow
foundry
frame
furnace
heat
heavy
hell
high
hot
industrial
industry
instrument
iron
manufacturing
measurement
melting
metal
metallurgy
mill
molten
plant
plants
pouring
process
production
red
smoke
spark
steel
storage
tank
technical
technology
working
yellow