在建立方程的过程中，考虑到流体对船舶的影响，引入了附加质量和附加惯性矩。

During the equation's deducing, the additional mass and addition inertia are introduced because of the effect of fluid force.

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正如线性动量是质量和速度乘积一样，物体角动量也定义为其惯性矩和角速度的乘积。

Just as linear momentum is the product of mass and velocity, so the angular momentum of a body is defined as the product of its moment of inertia and its angular velocity.

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恰当地引入了降落伞的附加质量和附加惯性矩，完整地分析了伞体和弹体所受的外力和外力矩，建立了由伞体和弹体组成的末敏弹系统二体运动模型。

The external forces and moments of the parachute and projectile are analyzed completely. A two body motion model of the TSP system, which is composed of the parachute and projectile, is established.

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