轨迹

Then, based on the mean curvature, Gaussian curvature and the function of principal curvature, the minimal loci of the principal normal surfaces of curves, the curves with constant Gaussian curvature and the two curves of which the ratio of their functions is constant can all be obtained, as well as the properties of geodesic curve and lumbar curve.

再根据平均曲率、高斯曲率及主曲率函数，能得到曲线的主法线曲面的极小轨迹、常高斯曲率曲线及两个主曲率函数之比为常数的曲线。还给出曲面上测地线和腰曲线的性质。

A method of CNC turbine blade profile abrasive belt grinding is introduced based on optimum grinding effect, where the direction of the axis of trolley wheel is consistent with that of minimum principal curvature on the contact point of turbine blade. And the cutter location path is determined, and then the NC code is derived from post-processing.

根据接触轮轴线与叶片型面接触点处最小主曲率方向重合可以达到最好的切削效果，设计了叶片磨削加工过程的运动方式，以此计算出刀位轨迹并进行后置处理得到 NC 代码。

Using guyed tower middle line insulator string as an object, through analyzing of distance between cross arm and boom guy plumb plane, and projecting insulator string length, angle, conductor wind inclined angle, and sag to boom guy plumb plane, middle line insulator string tracking equations can be established.

以拉线塔中线绝缘子串为分析对象，通过对横担、拉线铅锤面间的距离分析，再将绝缘子的串长、角度，导线风偏角、弧垂投影至拉线铅锤面，在拉线铅锤面建立中线绝缘子串的轨迹方程，以带电体与拉线间的距离为限制条件，从不同角度计算出第1、2、3极限风偏角，取其中的最小值为极限风偏角。

In accordance with this characteristics, moving objects can be effectively extracted with local auto-adaptive threshold, and the trajectory of moving object can be gotten by applying projective transformation from spatiotemporal space to geography space.

针对该特点，运用逐点灰度均值将背景与运动点目标分离，并根据投影关系将目标投影到二维空间，获得直观的目标运动轨迹。

His poetry style change constantly.This thesis thread is some important poetry collection in different period.Start with poetry ,unite poet's prose work and literature review, get in touch with poet's vicissitudes of life, surroundings, view and origin of literature and art. From the angle of creation,the author divides the poetry period into three, part: initial stage(write realistically and romantic),...

本文以诗人不同时期的重要诗集为线索，从诗篇入手，结合诗人的散文著作与文学评论，联系诗人的遭遇、所处环境以及诗观、文学艺术渊源，从创作实践的角度将他的诗歌创作分为学步期、探索期、成熟期三个时期加以讨论，指陈其思想、艺术成熟的轨迹。

In this paper, syllable-based prosody modelings of pitch contour and syllable duration for isolated Mandarin words are proposed.

在本文中，我们对中文单词提出了以音节为基本单位的基频轨迹及音节长度的韵律模型。

In conclusion, research on the prospering and fading of Kaifeng in Qing dynasty is full of great significance.

在此基础上也勾勒出清代开封城市的演变轨迹。

The functions of protraction of its spatial complicated figures and the calligraphy of Chinese characters were realized.

通过多种运动插补方法实现输出末端的预定轨迹，通过类对象间关系分析得到基于PC的运动控制体系软件层次结构。

You can choose to think of you, but you can not really my track provisions

你可以选择你的认为，但你真的无法规定我的轨迹

Facing the safety flying problems that appear during space autonomous proximity operations,we present a safety trajectory control strategy,which is based on space vectors,for solving both collision avoidance and plume contamination avoidance.

针对空间自主临近操作过程中的安全飞行问题，提出一种基于空间矢量的防碰撞和防羽流污染安全轨迹控制策略。

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。