رعاية تجارية
- Male
- 01/01/1994
- متابع بواسطة 0 اشخاص
التحديثات الأخيرة
- The Science Behind Noise Reduction Rating and its Importance in Various IndustriesUnderstanding Noise Reduction Rating (NRR) Noise Reduction Rating (NRR) is a measure of the effectiveness of hearing protection devices in reducing noise exposure. It quantifies the level of noise reduction provided by a specific device and is expressed in decibels (dB). The higher the NRR, the greater the potential for noise reduction. For example, if a device has an NRR of 25 dB, it means...0 التعليقات 0 نشرالرجاء تسجيل الدخول , للأعجاب والمشاركة والتعليق على هذا!
شاهد المزيد
رعاية تجارية