DIN 45645-2:1980 根据测量数据确定评级水平 第 2 部分:在给定听力损伤风险以下的水平范围内确定工作场所职业活动的噪声评级水平
Determination of rating levels from measurement data - Part 2: Determination of the noise rating level for occupational activities at the work place for the level range underneath the given risk of hearing damage