金属産業
wind power
風力
air pollution
blast furnace
blue
brown
color image
comparison
condensation
contrasts
environment
europe
foundry
furnace
gray color
heat
horizontal
ijmuiden
iron
melting
metal
metallurgy
mill
netherlands
pollution
rolling
side by side
smoke
smoke stack
stainless steel
steel
steel mill
steelmaking
sustainable energy
temperature
wind
wind turbine