hõbehall habras poolmetall, keemiline element järjenumbriga 51

a metallic element belonging to the nitrogen group (Group 15 (Va) of the periodic table), keemiline element, poolmetall, hõbevalge kristalne aine, sulamistemperatuur 630,6 ºC, tihedus (metalne aasta) 6,7 Mg/m3

information issued by a manufacturer that details maintenance procedures that will enhance the safety or improve the performance of the product, the document used by manufacturers of aircraft, their engines or their components to communicate details of modifications which can be embodied in aircraft