DIN EN 60721-3-5:1998 环境条件的分类.第3部分:环境参数组及其严酷程度分类.第5节:地面车辆的安装
Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities; Section 5: Ground vehicle installations (IEC 60721-3-5:1997); German version EN 60721-3-5:1997