运动学

A four-joint flexible underwater pisciform propulsion system is developed and the control flow chart is presented.

设计了四关节柔性水下仿鱼形推进器，给出了控制流程图，建立了运动学方程。

In this paper, we put forward an idea that the concrete pump car is robotized. For some problems about booms'robotization of concrete pump car, a lot of studies are thoroughly accomplished, by means of intelligent optimization method and finite element method of model design method, robotic kinematics and dynamics theory, computer graphics, computer simulation, mechanical control technology, hydraulic control technology, and so on. This idea establishes a new development way for research, design improvement and updating of the concrete pump car.

本文提出了泵车布料机构的机器人化的设想，并对泵车布料机构机器人化所涉及的若干问题，应用现代设计方法中的智能优化技术、有限元分析技术以及机器人运动学和动力学理论、计算机图形学原理、计算机仿真、液压控制等技术，进行了深入细致地研究，从而为现代泵车的研究、设计改进和升级换代开辟了新的途径。

To accurately quantify three-dimensional in vivo kinematics of fractured scaphoid in wrist flexion-extension and radial-ulnar deviation,and to provide the theoretic proofs to clinical application.

在体研究手舟骨骨折后屈-伸和桡-尺偏运动时的三维运动学变化，为临床诊治提供理论指导。

The analysis of tectonite types and superposed deformation provide reliable evidence for the movement and dynamics features of the fault zone.

对断裂带内构造岩类型和叠加特征的分析为断裂带运动学、动力学及演化史提供了直接而可靠的依据。

Such variations in properties further indicate the complexity of the formation processes and evolution in Western Himalayan Syntaxis zone over long geological periods.

显然西构造区的介质属性、构造格局和深层过程均制约着、并强烈影响着高原西北缘及其西部的深、浅构造组构和运动学与动力学响应。

A hinged rib member, through a kinematic linkage mechanism associated between itself and the structure at the outermost edge of the airfoil section, bends and torsionally twists the airfoil edge forming structure about a relative spanwise axis.

一铰链肋骨会员，通过运动学联动机制之间的关联本身和结构在最外层的边缘翼型节，弯位和扭矩曲折翼型优势，形成结构相对展轴。

The digital model of hel icopter main motor downwash flow and missile dynamics was established. The variation of the missile attitude and traject ory under rotor downˉwash flow are analyzed through simulation, the variety curves of them are provided on both cond itions that with or without the control of autopilot.

通过建立直升机下洗流场数学模型和导弹动力学和运动学模型，对导弹在旋翼干扰流场下的姿态和弹道变化进行了仿真研究，给出了在导弹自动驾驶仪启控或不启控状态下旋翼下洗流干扰对导弹姿态和弹道影响变化曲线。

It shows that the kinematics and translational dynamics are the same, but they have different rotational dynamics.

分析表明，2种建模方法的运动学方程和平移动力学方程相同，但旋转动力学模型完全不同。

Through kinematics simulation, the rationality of structure design and planned trajectories of the transplanter were proved. The research provides a theoryetical basis for optimal design of the prototype machine.

建立了移栽机的ADAMS简化模型，通过运动学仿真验证了结构设计、轨迹规划的合理性，为物理样机的优化设计提出了理论依据。

In view of the concrete structure of double front axles steering, and base on related automobile theories and the connecting rod mechanism kinematics, this thesis theoretically analysis the multi-axle steering trapezia and the steering rotary arm mechanism, and establishes an integral space mathematical model of the steering system on the basis of previous achievement.

本文针对双前桥转向汽车起重机的具体结构，利用相关汽车理论和连杆机构运动学的知识，在消化、吸收、归纳、总结前人的成果上，系统、全面地对多桥转向汽车的转向梯形、转向摇臂机构进行理论分析，建立其转向系统的整体空间数学模型。

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％。