機器
blast
cast
casting
construction
electric
factory
fire
flame
foundry
furnace
glowing
heat
heavy
hot
indoor
industry
iron
ironworks
ladle
liquid
machinery
manufacture
manufacturing
melt
melting
metal
metallic
metallurgical
metallurgy
metalwork
mill
mold
molten
pour
process
processing
production
red
safety
slab
slag
smelter
smelting
spark
steel
steelworks
temperature
work
workshop