当用户按下开火时，火箭发射器实例一个火箭预置物体。预置物体包含一个网格、刚体、碰撞器和一个子游戏物体包含的粒子系统拖尾。
A rocket launcher instantiates a rocket Prefab when the user presses fire. The Prefab contains a mesh, Rigidbody, Collider, and a child GameObject that contains a trail particle system.
普适方程用于分析运动物体考虑其变形或由刚体和变形体组成的混合系统的动力学问题是方便的。
Also, the analysis of the movement of deformation body and the dynamic problem of the mixed system, which composed by rigid body and elastic body, are to be resolved by using this universal equation.
对于一维物体的一般刚体运动，给出了把它转化为平移运动的方法。
For the general rigid motion of the 1d object, we give a method to transform it into the translation case.
长期以来的研究都还局限于刚体之间的力反馈，然而，可变形物体的力反馈因其更具有实用性和现实意义而备受关注。
For a long time force feedback is limited to rigid objects, force rendering of deformable object has more been concerned because of its practicability and realistic meanings.
在预处理阶段，本算法对场景内每个刚体分别计算其辐射场，而在渲染阶段，本算法迭代计算每个物体的入射光。
The calculation of radiance fields are done for each object individually in the precomputing process while iterations are finished in real-time rendering.
在实例预置物体后，还可以修改实例物体的任意属性(例如设置火箭刚体的速度)。
After instantiating the Prefab you can also modify any properties of the instantiated object (e. g. you can set the velocity of the rocket's Rigidbody).
碰撞器并不一定需要附加刚体，但是要使移动物体具有碰撞效果必须附加刚体。
Collider does not necessarily need a Rigidbody attached, but a Rigidbody must be attached in order for the object to move as a result of collisions.
机构被定义为：“是由刚体或者有承载能力的物体连接而形成的组合体，它们在运动时彼此之间应该具有确定的相对运动。”
A mechanism has been defined as "a combination of rigid or resistant bodies so formed and connected that they move upon each other with definite relative motion."
并分析了袋鼠生物体的结构和运动特点，研究了有关机器人多刚体动力学的分析方法。
The structural and motion characteristics of the kangaroo are studied, and the analyzing methods for robot multi-body dynamics are discussed.
并分析了袋鼠生物体的结构和运动特点，研究了有关机器人多刚体动力学的分析方法。
The structural and motion characteristics of the kangaroo are studied, and the analyzing methods for robot multi-body dynamics are discussed.
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