轨迹

The first chapter is the pandect, which defines the intention and extension of the Tianyuan poem, summarizes the basal status of Songs Tianyuan poem , tries to show the venation and the track of its development, analyses the reasons of its prosperity such as the social circumstance , the literary tradition and the framers.

第一章总论篇，明确田园诗这一概念的内涵与外延。对宋代田园诗的基本创作状况进行概述，力图呈现其发展的内在脉络和历史轨迹。从社会环境、文学传统和创作主体等方面揭示宋代田园诗繁荣的深层底蕴。

Because of the parallax effect, the asteroid抯 exact trajectory depends on your geographical location.

例如在美国丹佛上空的轨迹应该在波士顿和洛山矶的中间，或者就在附近。

In this paper, based on the flexible multibody dynamics model of the virtual axis hybrid polishing machine tool, the differential — algebra hybrid equations is calculated by the Newton- Raphson method. The variety of the moving displacement, the velocity and the acceleration for the moving platform, leg, slider on the 3- PTT parallel mechanism and the pose curve of the series mechanism are obtained.

论文主要完成了在已经建立的虚拟轴混联研抛机床多柔体动力学模型基础上，应用牛顿—拉斐逊（Newton-Raphson）数值计算方法求解微分—代数混合方程组，得到3-PTT并联机构动平台、支杆、滑鞍各部件的运动轨迹、速度和加速度变化规律，以及串联机构的姿态变化曲线。

This work provides a feasible theory thereunder in the displacement analysis of parallel manipulator in advance research.

在各种约束存在条件下，分析了刚体平台相应的运动轨迹形式，为今后对多刚体的形位分析提供了可行的理论依据。

For the request of NC machining the tool track can be input in the G codes wayIn this paper there are analysis, calculation and simulation modeling to 2-DOF and 3D0F parallel translation mechanism.

根据利用并联机构进行数控加工的要求，本文还开发了接受以G代码的方式输入的刀具点运动轨迹从而控制被选机构运动的功能。

In order to solve these problems, a direct interpolation algorithm for the projective curve on parametric surface is proposed in this paper.

针对这种情况，文中针对参数曲面上以投影方式形成的空间曲线轨迹，提出了一种直接插补算法。

To improve the acceleration-deceleration capabilities of the parametric curve interpolator ,an adaptive acceleration-deceleration control method is presented.

CNC系统中参数曲线插补广泛地应用于复杂轨迹的生成。

Based on the local parametric representation of a curve, the mathematical models of planar mechanism optimum synthesis for the local path generation are built. Objective functions are constructed generally and for some special cases as well.

在平面曲线局部参数表示的基础上建立平面机构局部轨迹优化综合的数学模型，构造了一般情况下及常见特殊情形的优化目标函数。

Chapter 4 probes the approaches to draw out the graphs of conic sections with locus and parametric equation as well as the approaches to create the graphs of polynomials.

第四章探索利用轨迹及参数式作出圆锥曲线图形的方法，以及多项函数图形的作法。

An approximate solution of the paraxial ray equation for cylindrical dense electron beams was obtained by means of the Taylor expansion.

本文提出圆柱形强流电子束的傍轴轨迹方程，可以用台劳展开求出它的近似解。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。