误差

In this paper, according to the characteristics of central projection, aerial photographs were analyzed to discuss displacement of images under tilt conditin or caused by ground undulation, based on which the principles of tilt error and projection error were summarized.

根据中心投影的特性，论述了像片在倾斜条件下所引起的像点位移和像片因地面起伏而引起的像点位移，在对其进行分析的基础上总结出倾斜误差和投影误差的规律，从而说明了不能把像片当作地形图使用。

In this paper, according to the characteristics of central projection, aerial photograph s were analyzed to discuss displacement of images under tilt conditin or caused by ground undulation, based on which the principles of tilt error and projection error were summarized.

本文以航空摄影测量像片为分析对象。根据中心投影的特性，论述了像片在倾斜条件下所引起的像点位移和像片因地面起伏而引起的像点位移，在对其进行分析的基础上总结出倾斜误差和投影误差的规律，从而说明了不能把像片当作地形图使用。这是使用航空像片时必须注意的基本问

The results show that, when the computational error and its accumulation are eliminated effectively, the laminar flow in OFR with perfect-symmetric boundaries behaves in a pattern of central symmetry and circumferential uniformity while the turbulent flow field presents a centrally symmetric and circumferentially non-uniform structure with 8 transverse vortices arrayed circumferentially in a way of central symmetry, similar to Taylor vortices in Couette flow.

模拟结果表明在有效消除计算随机误差以及误差积累的情况下，几何边界理想对称OFR内的三维层流流场呈现出良好的中心对称性和周向均匀性，而湍流流场中心对称的同时呈现出周向非均匀结构－在圆周上生成8个中心对称排列的横向漩涡，其形态与Couette流中的泰勒涡类似。

In this paper,the methods estimating the characteristic root errors are described for the er-ror analysis of digital simulation model in frequency domain.

本文讨论数字仿真模型频域误差分析的特征根误差的估计方法。

We prove that the symplectic schemes preserve the charge conservation law exactly and analyze the energy residual. Both the global error and convergence ratio of the numerical solution are of ?

证明了我们构造的辛格式保持电荷守恒，而且分析了它的能量误差，证明了数值解的整体截断误差和解的收敛速度均为？

According to analyzing the shortcoming of the estimation of circler error probability CEP of multiple independently targeted reentry vehicles MITRV , this paper put forward a new method that is adapt to actual situation .

根据一种多头分导方案实例，利用这种新的方法进行了子弹头圆概率误差的计算和验证，通过不同方法的对比，证实新的估算方法简单，可靠，结论符合误差分配规律。

Contour Error of linear and circular motion is caused by following error of each axis position servo system.

由于位置伺服系统跟随误差的存在，导致直线和圆弧运动时产生轮廓运动误差。

These formulars are simple and of great accuracy. Therefore, they can be used as another effective method in evaluating the circularity error.

结果表明运用本公式评定圆度误差，精确度高，计算简便，是评定圆度误差的一种新计算方法。

It showed the correctness of the criteria of roundness error and relationship between the minimum zone circle, minimum circumscribed circle and maximum inscribed circle and the effectiveness of the methods for evaluation of roundness error.

也验证了圆度误差判别准则及最小区域圆、最小外接圆和最大内接圆特征点间的相互关系的准确性和误差评定方法的有效性。

An algorithm of finding minimum circumscribed circle for the analysis of coaxial errors is proposed. The aim of the analysis together with FEM modeling is to overcome the difficulty of data collection on machinery in operation. An axis is divided into n-sections.

针对工作状态下机械零部件同轴度误差数据采集难的特点，结合有限元后处理，提出了一种通过求解一组投影圆心坐标的最小包容圆来实现分析同轴度误差的计算方法。

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。