Enclosures for protection against ionizing radiation; lead shielding units for 150 mm, 200 mm and 250 mm thick walls; part 1: chevron units of 150 mm and 200 mm thickness— 49 стр.
13.280 Radiation. Including protection against radio-frequency radiation / Защита от радиационного излучения. Включая защиту от радиочастотного излучения
