GB/T 19520.12-2009
电子设备机械结构.482.6mm(19in)系列机械结构尺寸.第3-101部分:插箱及其插件
Mechanical structures for eletronic equipment.Dimensions of mechanical structures of the 482.6 mm(19 in) series.Part 3-101:Subracks and associated plug-in units
GBT19520.12-2009, GB19520.12-2009