Naturally, the application may need to extend the generated class by either derivation or encapsulation for its own purposes.

无疑，应用程序可能需要根据其用途通过派生或封装对生成的类进行扩展。

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Such equations are deemed to have important application in general ship dynamics and a theorem is established to facilitate the derivation of the equations.

相信一般的船舶动力学中这些方程会有重要的应用。本文建立了一个定理以便于推导这一方程。

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The detail derivation and application examples are also given.

并给出该条件的详细推导和应用实例。

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