• 最后给出了范围适用的声阻率近似公式

    Finally, an approximating formula which is applicable for the whole frequency range is given.

    youdao

  • 本文提出计算法设计专用列线图。

    A special nomograph designed for calculating the normal specific acoustic impedance is proposed.

    youdao

  • 本文对微穿孔非线性理论实验两方面研究

    In this paper, the nonlinear acoustic impedance of the micro-perforated panel is investigated both theoretically and experimentally.

    youdao

  • 目前离子浓度异常、氯离子剖面以及测井数据预测水合物饱和度

    At present, electric resistance, chloride ion concentration anomaly, chloride ion profile and acoustic impedance logging data can be used to predict the gas hydrate saturation.

    youdao

  • 本文根据严格理论分析了圆柱面小孔端面由于辐射所产生

    In this paper, the acoustic impedance caused by the sound radiation at the terminals of the aperture, which is laid on the cylindrical surface, is analysed on the base of rigorous sound theory.

    youdao

  • 目前离子浓度异常、氯离子剖面以及测井数据预测水合物饱和度。

    At present, electric resistance, chloride ion concentration anomaly, chloride ion profile and acoustic impedance logging data can b...

    youdao

  • 目前离子浓度异常、氯离子剖面以及测井数据预测水合物饱和度。

    At present, electric resistance, chloride ion concentration anomaly, chloride ion profile and acoustic impedance logging data can b...

    youdao

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