NF Z87-019-1-4*NF EN 300019-1-4:2014
環(huán)境工程 (EE). 電信設(shè)備的環(huán)境條件和環(huán)境試驗(yàn). 第1-4部分: 環(huán)境條件的分類. 非抗大氣影響場(chǎng)所用固定設(shè)備 (V2.2.1)
Environmental Engineering (EE) - Environmental conditions and environmental tests for telecommunications equipment - Part 1-4 : classification of environmental conditions - Stationary use at non-weatherprotected locations (V2.2.1)