04-09-2023
50
مقاييس
صوتيات ووسائل صوتية
اختبارات
850 ج.م.
ISO: 11202/2010-AMD 1/2020 Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections.
متبناه
غير الزامى
17.140.20