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noise reduction rating
A measure of a hearing protector's effectiveness in reducing noise such as results from mining operations where drilling, cutting, blasting, etc. create high noise levels. Abbrev. NRR.
- ส่วนหนึ่งของคำพูด: noun
- อุตสาหกรรม/ขอบเขต: Mining
- Category: General mining; Mineral mining
- Government Agency: USBM
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- ed.young
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(V.I.P) 21084 points - 100% positive feedback
(Milwaukee, United States)
