ETSI PRETS 300 019-1-7-1991 设备工程(EE).电信设备的环境条件和环境测试.第1-7部分:环境条件的分类.便携和非固定使用
Equipment Engineering (EE); Environmental Conditions and Environmental Tests for Telecommunications Equipment Part 1-7: Classification of Environmental Conditions Portable and Non-Stationary Use