标准摘要
[中文适用范围]： 包括多元件限束装置（多元件 BLD），广泛用于确定辐射场的形状。 [外文原描述]： Includes multi-element beam limiting devices (multielement BLDs) which are widely used for determining the shape of the radiation field.
英文名称Amendment 1 - Medical electrical equipment - Medical electron accelerators in the range 1 MeV to 50 MeV - Guidelines for functional performance characteristics