标准摘要
[中文适用范围]： 全部或部分用于根据 IEC 917-2 分规范设计设备和系统的所有电子领域。目的是确保机械互换性的尺寸规格（基础 [外文原描述]： Prescribes dimensions which will ensure mechanical interchangeability of subracks, chassis, plug-in units, backplanes and front panels.
英文名称Modular order for the development of mechanical structures for electronic equipment practices - Part 2: Sectional specification - Interface co-ordination dimensions for the 25 mm equipment practice - Section 2: Detail specification - Dimensions for subracks, chassis, backplanes, front panels and plug-in units