To this end, the authors adopted a variable boundary model to treat the tidal flat and found better results than those of the fixed boundary model.

为此，本文采用变动边界模型处理潮滩区域，并得到优于固定边界模型的计算结果。

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The problem of the lee slope stability of dune is equivalent to the extremal problem of a functional of two-variant function with a variable boundary in this paper.

将沙丘背风坡的稳定性问题等价于一个双参变量函数的待定边界的泛函极值问题。

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In this paper, the behavior of coupling between the translation and rotation of the rigid body with variable boundary is investigated using numerical method via a typical example.

通过一典型的时变边界刚体实例，用数值方法研究时变边界刚体的平动与转动的耦合特性。

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