Enclosures for protection against ionizing radiation — Lead shielding units for 50 mm and 100 mm thick walls
电离辐射防护外壳——50mm和100mm厚墙壁的铅屏蔽装置

1986-06-19

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
电离辐射防护外壳——150 mm、200 mm和250 mm厚壁用铅屏蔽装置Spart 1:150 mm和200 mm厚的V形装置

1991-10-10