燃やす
burner
business
closeup
conveyor
factory
fire
foundry
fuel
furnace
generating
generator
heat
heavy
hot
industrial
industry
intensive
iron
laser
manufacturing
measure
melting
metal
metallurgy
mill
molten
orange
oven
plant
pollution
power
process
production
red
roller
rolling
smoke
spark
steel
stove
technical
temperature
welding