问:哪里下载ISO 17497-2 2012 Acoustics — Sound-scattering properties of surfaces — Part 2 Measurement of the directional diffusion coefficient in a free field答:请联系微信:siduwenku
ISO 17497-2 2012 Acoustics — Sound-scattering properties of surfaces — Part 2 Measurement of the directional diffusion coefficient in a free field