查询词典 planetary motion

The piston's transverse motion across the cylinder and rotation around piston pin, so called secondary motion, was studied by analytical method.

采用模拟分析的方法研究了活塞沿缸套的横向运动和绕活塞销的转动，也就是所谓的二次运动。

The time evolution of expectation values of the basic dynamic variables in a quantum system under different effective Planck constant were compared with the exact values of the basic dynamic variables in classical system. It is found, for the regular motion, the difference comes from the quantum effect; for the chaotic motion, it comes from the dynamical effect and the destruction of the dynamical system.

通过引入等效普朗克常数，将量子系统中基本动力学变量的期望值和经典系统中基本动力学变量的精确值的时间演化行为相比较，分析了两者产生差异的因素，规则运动主要是和量子效应有关，而混沌运动则是和动力学效应有关，即与系统的动力学对称性破坏相联系。

Geologists describe the motion of the plates and the consequences of such motion as plate tectonics .

地质学家把板块运动及这种运动所造成的后果看作是板块构造运动。

The model of launch vehicle is rigidˉbody motion equati on. The model of stabilizing parachute is mass point motion equation.

其中运载火箭的数学模型是刚体运动模型，稳定伞的模型是质点模型，而伞绳的模型是弹簧阻尼系统模型。

According to each joint motion parameter, the manipulators position and pose can be solved, as well as according to the specified relevant position and pose parameter, each joint motion parameter can be solved.

根据各关节的运动参数，求解机械手的位置和姿态；以及根据给定的相关位置和姿态参数，求解各关节的运动参数。

Studied pumping well system in this article, the intermediate power transmission parts uesed flexible rod, the downhole assembled rod pump, the ground driving device would transform up and down reciprocating motion into rotating motion. With own mechanism rounded trip for the downhole flexible rod and pump. Wellhead polished rod changed common stell for flexible polished rod. It was a innovation in theory study and craftwork method. It was a remarkable feature in this article, because these innovations were not studied and attempted for prehuman.

本文所研究的抽油系统，中间动力传动部件采用柔性抽油杆，井下配套杆式抽油泵，其地面驱动装置将传统抽油机驴头的上下往复运动变为旋转运动，并且能够利用自身结构对井下柔性抽油杆及泵体实现起下作业，井口光杆也由普通钢质光杆变为柔性光杆，这是理论研究和工艺方法的创新，这些创新都是前人所没有研究和尝试的，是本文的一大显著特点。

By the statistical analysis of motion vector probability distribution of sequences, its directional characteristics are found. A novel algorithm-improved cross-diamond search algorithm is proposed by using small cross-search pattern to search small fiction vectors as the initial step based on the center-biased characteristics of motion vector probability distribution.

通过对序列运动矢量概率分布分析，发现了该概率分布的方向性特性，提出了一种新的块匹配运动估计算法―改进的十字－菱形搜索算法。

This software also can obtain virtual experimental data for any time during the projectile motion, and from processing these data the user can predict a characteristic property of the projectile motion.

让专科学生能够利用此套软体进行模拟实验，经由电脑对物理现象的模拟来作数据的记录，再藉著数据处理及绘图的协助作出结论，使学习者对抛体运动能获得真正的理解，以达到电脑辅助学习的目的。

To analyse the motion of in-bore projectile; We can get the acting force between the projectile and the gun tube, the motion of gun and the attitude of in-bore projectile at any time.

详细分析弹丸发射过程中火炮及弹丸的运动情况，能给出任意瞬时弹丸与身管之间的作用力，弹丸在膛内的姿态以及火炮的运动参数

BACKGROUND: Lower limb motion is complex. Proper human motion parameters detection is important for knee prosthesis control.

摘要背景：下肢运动是一种复杂的运动，采用合适的传感器获取人体运动生理信息，成为智能假肢控制的前提。

Panorama Many people are dancing in a large sitting room.

在一个大客厅里，许多人在跳舞。

We fully understand how a microwave oven cooks food, it is first necessary to talk ...

我们充分理解一个微波炉煮的食物，这是首先要谈。。。