略語大辞典 [Env] 22 dB(A)* A-weighted sound level A加重騒音レベル. デシベルA.A-weighted sound level; ref. EPNL; ECPNL; WECPNL; [Env:Mes:Phys]. 丸善「略語大辞典」JLogosID : 11871174