掩蔽: screen; shelter; cover; mask; blanket; hide; defilade; audio masking; aural masking; ensconce 短语和例子掩蔽目标 cover up the object; keep from sight; 这个土丘可做我们的掩蔽物。 the mound can be used as our scr
Reference levels for narrow - band masking noise 窄带掩蔽噪声的基准级
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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
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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