
Acoustics - Determination Of Sound Power Levels Of Noise Sources - Survey Method Employing As Enveloping Measurement Surface Over A Reflecting Plane
出版:British Standards Institution

专家解读视频
Acoustics - Determination Of Sound Power Levels Of Noise Sources - Survey Method Employing As Enveloping Measurement Surface Over A Reflecting Plane
出版:British Standards Institution
专家解读视频