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neper ['niːpə, -ər] n
gen.	奈培衰减单位，等于8.686分贝; 奈培衰减单位，等于8. 686分贝; 奈培衰减单位
agric.	奈培衰减单位= 8.686分贝
avia.	奈培
earth.sc.	奈培衰减单位，=8.686 分贝
el.	奈培衰减单位，1奈培= 8.686 分贝; 奈培衰减单位,lNp = 8.686dB
multimed.	奈培衰耗单位
space	奈培 (衰减单位,1奈培= 8. 686分贝)
tech.	奈培【物
telecom.	奈培 (Np, 8.686dB)