数值计算采用了有限差分法，可算出某时刻厚板边缘散射场的分布和某点声场随时间的变化。

The finite difference method (FDM) is used in the numerical calculation. Fielddistribution at particular time and field at one point as a function of time are displayed.

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荷伯先生认为，大部分的非洲城市就像一个单煎荷包蛋，贫民区与富民区都异常整齐的分开，贫民区从城市边缘散射开来。

Most African cities separate fairly neatly into poor and rich areas "like a sunny-side-up egg", with slums spreading out from the rim, says Mr Hebel.

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这次模拟器没有对表面行波、相邻边界和缝隙的反向散射，或者边缘绕射散射效应进行建模。

At this time the simulator does not implement surface travelling wave modelling and associated edge or gap backscatter modelling, or edge diffraction scattering effect modelling.

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