The equation of displacement wave and sound pressure wave in the sound velocity experiment are derived. And their relation is analyzed.

推导了声速测定实验中合成声场的位移波动方程、声压波动方程以及两者之间的关系。

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By spherical function expansion of the scattered sound field in conjunction with rigid boundary conditions, formulas for reconstructing the shapes of rigid scattering objects are derived.

本文用球函数展开散射场，结合刚性边界条件导出了刚性目标的重构公式，并利用该公式重构了刚性球和椭球的形状。

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It is derived from the Sutra story of the India, which shapes literature structure of forecasting by hearing sound motif in Chinese.

其作为从印度传来的佛经故事母题，确立了中土闻音预见母题的文学构架。

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For players, the distinctive sound of jazz has derived not from acquiring a conventional classical technique on an instrument, but from emulating the spontaneous twists and turns of an impassioned voice.

ECONOMIST: Jazz singers