标准摘要
[中文适用范围]： 指定用于构建基本单元（砖、柱）和功能单元（孔砖、窗户、球体单元、塞子和异径单元）的各种主导单元的属性。 附录 A 仅供参考。 [外文原描述]： Specifies the properties of the various lead units used in the construction of basic units (bricks, posts) and functional units (aperture bricks, windows, sphere units, plugs and reducing units). Annex A is for information only.
英文名称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