DIN EN 60917-2-4-2011 电子设备机械结构开发用模块化规则.第2-4部分:分规范 -25 mm设备的接口协调尺寸.支架或底架用适配尺寸
Modular order for the development of mechanical structures for electronic equipment practices - Part 2-4: Sectional specification - Interface coordination dimensions for the 25 mm equipment practice - Adaptation dimensions for subracks or chassis applicab