Such equations are deemed to have important application in general shipdynamics 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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A good pirate captain had to know the astronomy to navigate by the stars. He had to be acquainted with meteorology and know enough fluid dynamics to make sure he didn't overload his ship with booty.