英文關鍵字
arc
asia
background
blast
bright
cast
casting
dirty
environment
equipment
factory
flame
flowing
flue
founder
foundry
fumes
furnace
furnaces
goggles
hard
heat
heavy
helmet
hot
industrial
industry
iron
job
ladle
liquid
melting
men
metal
metallurgical
metallurgy
mill
molten
occupation
pouring
production
red
safety
sparks
steel
steelworks
toughness
work
worker
workshop