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.
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。
Performance capture poses two distinct problems: capturing body movements, known as motion capture, and capturing facial expressions.
表演捕捉提出了两个明显的问题：一是捕捉肢体动作，即动作捕捉；一是捕捉面部表情。
If the body is restricted to motion in a plane, there are three degrees-of-freedom: translation in two coordinate directions and rotation within the plane.
如果该机构是限制于在一个平面运动，那有三个自由度：直线运动在两个坐标方向和在平面内的旋转。
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