短語詞組短語acoustic emission characteristic 聲發(fā)射特性acoustic field characteristic 聲場特性acoustic analysis characteristic 聲分析特性曲線nonlinear acoustic characteristic 非線性聲學特征Acoustic characteristic evaluation 聲學性能表征acoustic characteristic extraction 聲學特性提取Other Acoustic Characteristic 其他聲音特性Acoustic characteristic parameters 聲學特性參數(shù)acoustic echo channel characteristic 聲回授通道特性 返回 acoustic characteristic