hat
lajman ki itilize nan ayewospasyal, elektwonik, ekleraj, ekipman medikal, kouch vakyòm, elèktrik elektrik vakyòm elektrik, ekran izolasyon chalè, elatriye kòm materyèl radyasyon pwoteksyon ak ekipman radyasyon-pwoteksyon.
eng
widely used in aerospace, electronics, lighting, medical equipment, vacuum coating, electric vacuum stove electrode, heat insulation screen, etc as the radiation shielding material and radiation-protective equipment.