DIN 45635-60:1989-10 Measurement of airborne noise emitted by machines; enveloping surface method; still picture and motion-picture projectors

标准编号：DIN 45635-60:1989-10

英文标题：Measurement of airborne noise emitted by machines; enveloping surface method; still picture and motion-picture projectors

德文标题：Geräuschmessung an Maschinen; Luftschallemission, Hüllflächen-Verfahren; Steh- und Laufbildprojektoren

发布日期：1989-10

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