运动学

Using engineering and numerical analysis software Matlab some simulations of the model are carried out, and the motion simulations of the fish body and the caudal fin under different kinematics parameters are also carried out.

根据对鲹科加新月形尾鳍推进模式的仿生学研究，在分析游动过程中身体与尾鳍运动的基础上，建立了一维稳态游动情况下鱼体及尾鳍的运动学模型，利用Matlab工程分析与计算软件对该模型进行了运动仿真，并进行了尾鳍和鱼体在不同运动参数下的仿真研究，给出了适合仿鱼水下推进器设计的参数取值范围。

Based on the bionic study on Thunniform propulsion mode and its body and caudal fin motion during one-freedom steady swimming condition, this dissertation sets up a kinematic model of this propulsion mode.

本文提出了一种仿鲹科加新月形尾鳍模式水下推进器的运动学模型。

Based on a study of the passive articulated rover,a complete suspension kinematics model from wheel to inertial reference frame is presented,which uses the D-H kinematics model method of manipulator and presentation with Euler angle of pitch,roll,and yaw.

以被动关节式地形自适应月球车为研究对象，融合关节机器人D-H坐标建模方法构建了月球车悬架运动学模型和以侧倾、俯仰和偏转角表示姿态的欧拉角方式建立了车轮到世界坐标系的悬架完整表达模型。

According to the functional requirements of adaptive front-lighting system, the relationships between the yaw angle and pitch angle of light axis in AFS and vehicle parameters, including speed, steering wheel angle and pitch angle of vehicle body are derived, thus a kinematics model for AFS is set up.

根据自适应前照灯系统的功能要求，推导了车辆参数（车速、转向盘转角和车身仰俯角）与车灯光轴沿水平和垂直两个方向的偏转角度之间的关系，建立了自适应前照灯系统的运动学模型。

Developments of the valve trains of domestic and foreign I.C. engines are introduced. The theory of the kinematics and dynamics of the valve mechanism is also described in this paper.

本文介绍了国内外内燃机配气机构的发展现状，以及凸轮设计的目标、要求与准则，论述了配气机构运动学和动力学的计算理论。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。