The motion of ship is nonlinear. The operating machine has nonlinearity such as dead zone and relay.

船舶运动呈非线性，操作机构有明显的死区、继电等非线性；

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Swaying test platform, as a space motion mechanical device, can simulate motion of ship, vehicle, space craft, gyro and so on.

摇摆台作为一种空间运动机械被广泛用来模拟舰船、车辆、飞行器、陀螺仪的运动姿态等。

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For the complexity of ocean environment, the motion of ship is a very complex movement. Roll is considered as the most significant motion in all of it.

由于船舶航行时所处的海洋环境的复杂性，船舶运动是一个非常复杂的运动，船舶横摇运动是考虑得最多的船舶运动。

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For the complexity of ocean environment, the motion of ship is a very complex movement. Roll is considered as the most significant motion in all of it.

由于船舶航行时所处的海洋环境的复杂性，船舶运动是一个非常复杂的运动，船舶横摇运动是考虑得最多的船舶运动。

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