| 1. | Reference levels for narrow - band masking noise
窄带掩蔽噪声的基准级 |
| 2. | Iii on the hsintien line , masking noise by increasing the foliage around the depot
机厂噪音问题则采用增加植栽方式，降低民众感受之噪音量。 |
| 3. | Acoustics - reference zero for the calibration of audiometric equipment - reference levels for narrow - band masking noise
声学.测听设备的校准参照区.掩蔽噪声的参考等级 |
| 4. | Acoustics - reference zero for the calibration of audiometric equipment - part 4 : reference levels for narrow - band masking noise
声学校准测听设备的基准零级第4部分：窄带掩蔽噪声的基准级 |
| 5. | Acoustics . reference zero for the calibration of audiometric equipment . part 4 : reference levels for narrow - band masking noise
声学.听力测定仪器的校准用基准0 .第4部分:窄频带遮蔽噪声的基准级 |
| 6. | Acoustics - reference zero for the calibration of audiometric equipment - part 4 : reference levels for narrow - band masking noise iso 389 - 4 : 1994 ; german version en iso 389 - 4 : 1998
声学.音响设备校正零点参考基准.第4部分:窄带遮敝噪 |
