查询词典 planetary motion

Therefore, the study is significant both theoretically and practically. As a result, the studying aim of this paper is to establish a practical and complete system for the prediction of ship maneuvering motion, taking into account of the influence of the environmental factors, such as the wind, wave and current, establish a practical and complete system for the prediction of ship maneuvering motion. In this paper, the OpenGL virtual reality simulation technique is introduced into the field of ship maneuver and control, and using the MMG mathematical model, the three dimensional dynamic simulation system of the ship motion is established and good results are achieved. In the process of the system development, firstly, the maneuvering motion equations for ship in the still water are established, based on the MMG module mathematical model and serial experimental result. After compiling the program, the calculation results are compared with the experimental data, the coherence between them validate the mathematical model.

在系统开发过程中，首先采用MMG分离式数学模型及相关的系列化试验结果，建立单桨单舵海洋运输船舶在静水中的船舶操纵运动方程，并编制计算程序，经与试验结果比较，证实了计算结果的正确性；为了解MMG数学模型中模型参数变化对操纵性指数的影响程度，作者在上述已有程序基础上，对有关模型参数进行偏移修正，探讨了相应参数变化后的操纵性指数，对船舶操纵性指数对模型参数的灵敏度进行了详细的分析与探讨，所得结论与工程实际相吻合，具有实际应用价值，并为进一步提高船舶操纵性预报的精度打下了基础；然后，在已有的船舶静水操纵运动模型基础上，考虑双桨双舵的影响，建立了内河双桨双舵船舶的操纵运动模型；最后，综合考虑风浪流作用力的影响，进行了船舶的操纵运动仿真计算。

At first, the initial values of motion vectors of blocks in the face area can be found by calculating the 2D parameters of general head motion. With the initial values, the range of further search in motion estimation can be reduced, and the results are consistent with the actual motion.

首先提出一种通过求出脸部区的二维全局运动参数来求各像块的运动矢量初值的方法，在得到各像块的运动矢量初值后，搜索范围可以很小，搜索到的精确的运动矢量更符合真实运动。

In this paper, we have certificated the correctness of the simulation mathematic model and the prediction programs by calculating horizontal stationary turning circle motion and vertical stationary submergence motion, and then have predicted the six motions of tow submarines in order to get the feature motion parameters and the motion track of the center.

本文首先通过对潜艇水平面定常回转运动和垂直面定常直线潜浮运动的计算，验证了仿真数学模型和预报程序的正确性，然后分别仿真预报了两艘潜艇的六种运动的特征运动参数和重心运动轨迹，其预报结果符合工程实际，能够较为全面地反映潜艇的空间操纵运动。

Impetus theory, which was introduced in order to resolve the problem of projectile, serves as a transitional theory. In trying to explain the motion of freefalling body, Galileo altered his direction of thinking and embraced a new concept of motion according to which motion is instantaneous motion.

为了解决抛体问题而引入的冲力理论是一个过渡，伽利略在用冲力理论解释自由落体运动时改变了思考问题的方向，转向新的运动概念－运动就是瞬时运动。

We show that the atomic c.m motion dont affect the atomic spectrum phase sensitivity when there is no correlation between atomic cm. motion and the field. With the increase of the average energy for atomic cm. motion, the peaks of the emission spectrum move towards each other, their heights change according to the state of the field and atomic motion. While there is correlation between atomic c.m.

当原子质心运动与光场无关联时，原子质心运动不影响原子发射谱对原子偶极矩和光场相对相位的敏感性，随着原子质心运动平均能量的增加，原子发射谱峰间的相对距离变小，峰高的变化与原子质心运动和光场所处的状态有关。

He used the methods of calculus to solve the problem of planetary motion, the shape of the surface of a rotating fluid, the oblateness of the earth, the motion of a weight sliding on a cycloid, and many other problems discussed in his Principia Mathematica .

在其他的工作，他开发的一系列扩展的功能，包括分数，不合理的权力，显然，他理解的原则，泰勒级数。他没有公布所有这些发现，并在这个时候无穷小方法仍然被视为违规。

The scale analysis on planetary scale motion in the tropical atmosphere shows that the equilibrium between the pressure gradient force and Coriolis force in the meridional direction is easily established, which is known as the zonally semi-geostrophic motion.

对热带大气行星尺度运动所做的尺度分析和物理分析表明：热带大气的行星尺度运动在y方向容易实现气压梯度力与Coriolis力的平衡，它称为纬圈的半地转运动。

The scale analysis on planetary scale motion in the tropical atmosphere shows that the equilibrium between the pressure gradient force and Coriolis force in the meridional direction is easily established, which is known as the zonally semi-geostrophic motion The semi-geostrophic adaptation process in which the inertial gravity waves play an important part is relatively quick The evolution process after the semi-geostrophic adaptation process is slow and controlled by the Kelvin waves and long Rossby waves

对热带大气行星尺度运动所做的尺度分析和物理分析表明：热带大气的行星尺度运动在y方向容易实现气压梯度力与Coriolis力的平衡，它称为纬圈的半地转运动。半地转平衡的建立过程，也就是半地转适应过程相对是很短暂的，它不需要考虑f=β0y随y的变化，因而主要依靠惯性重力波为频散；而半地转平衡建立后的演变过程相对是很缓慢的，它主要受Kelvin波和Rossby波控制。

So the movement of wafer is consisted of planetary motion and spin motion.

使晶片的运动是行星运动和自转运动的合成运动。

In other words, a phrase like "Newtonian gravity is the cause of planetary motion" means simply that Newtonian gravity explains the motion of the planets.

或者说，像"牛顿学说的重力是行星运动的原因"这个短语的意思就是牛顿学说的重力解释了行星的运动。

It's rather showy.I'd like something plainer.

赶花了，我想要素净些的。

The Kremlins Spassky Tower and passers-by are reflected in the wet cobblestones of Moscows Red Square on Feb.

克里姆林宫的斯巴斯克塔和旅客的身影倒映在潮湿的鹅卵石墙上。