B-4 遠心送風機の発生騒音について
B-4 On sound power levels of centrifugal fans

Morimasa Itamoto, Hiroyoshi Shiokawa
1988 Techinical Papers of Annual Meeting the Society of Heating,Air-conditioning and Sanitary Engineers of Japan  
doi:10.18948/shasetaikai.1988.0_297 fatcat:f4mttnjjzrfsvd2sasnqfwbjxy