GB/T 19520.19-2020
ActiveMechanical structures for electronic equipment—Dimensions of mechanical structures of the 482.6 mm (19 in) series—Part 3-107: Dimensions of subracks and plug-in units, small form factor
电子设备机械结构 482.6 mm(19 in)系列机械结构尺寸 第3-107部分:小型化插箱和插件的尺寸