impuretés /INDUSTRY-METAL/
[DE] Stahlbegleiter
[EN] companion elements
[FR] impuretés
impuretés /INDUSTRY-METAL/
[DE] Stahlbegleiter; Verunreinigungen
[EN] companion elements; impurities
[FR] impuretés
impuretés /INDUSTRY-CHEM,ENG-ELECTRICAL/
[DE] Fremdstoffe
[EN] impurities
[FR] impuretés