美利体育登录入口官网:EN ISO 7779:2001 声学.信息技术美利体育官网首页网址和电信美利体育官网首页网址发出的空气噪声的测量.包含修改件A1-2003;代替EN 27779-1991;ISO 7779-1999 + A1-2003
Acoustics - Measurement of Airborne Noise Emitted by Information Technology and Telecommunications Equipment Includes Amendment A1:2003; Supersedes EN 27779:1991; ISO 7779:1999 + A1:2003