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product noise standard
释义
product noise standard
Encyclopedia
工学
产品噪声标准
释
product noise standard
产品噪声标准
为减少产品使用中噪声对环境以及使用者的影响,促进产品质量提高,对产品的声音排放特性指标所作出的法规性技术规定。通常用A计权的声功率级或声压级表示,需要按规定的方法进行测量。
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occultation curve
occultation of planet
occultation of satellite
occultation of source
occultation of star
occultation photometric detection
occultation time
occultation variable
occulting disk
occulting mask
occulting object
occulting source
occultor
occult precipitation
occult virus
occupancy
occupancy probability
occupancy problem
occupancy rate
occupancy; site occupation factor (SOF)
occupant density of exhibition hall
occupation
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