This International Standard specifies four methods for the determination of the sound power levels of high-frequency noise emitted by machinery and equipment in the frequency range covered by the octave band centred at 16 kHz, which includes frequencies
18-08-2024
23
مقاييس
صوتيات ووسائل صوتية
مقاسات
445 ج.م.
ISO : 9295/2015
تحديث متبناه
غير الزامى
17.140.20