The angle with the plumb line could be determined by the deviation of the vertical with spherical trigonometry.
发射点偏差对弹道导弹射击所引起的偏差可归结为垂线、法线与地心矢径的夹角不同和瞄准方位的不同,利用球面三角知识通过垂线偏差求出垂线与地心矢径的夹角,在诸元计算软件中适当修改一下诸元计算方法,使发射坐标系与标准发射坐标系完全重合,可以完全修正垂线偏差的影响,从而可以大大提高弹道导弹的射击精度。
An axonometric drawing theory to draw an affine picture starting from two given affine picture is studied in affine coordinate system by spherical trigonometry, and three conditions are given out, one is the condition of drawing orthographic projection starting from two given affine picture, the other is the condition of drawing orthographic projection starting from.
用 3 个仿射图的投射方向构成 1 个仿射坐标系,同时也构成 1 个三棱锥,在此仿射坐标系中用球面三角重新研究由两个仿射图求第 3 个仿射图的投影作图理论 ——平行线束法。
Based on the theories of spherical trigonometry and theoretical knowledge about projection,this paper introduces two ways(the calculation and diagrammatic representation)of finding the shortest path in a flying range and the conditions to ensure a plane to fly in this path.
根据球面三角理论和投影理论知识 ,用计算和图示两种方法给出了求解航程中最短路径和保证飞机在此路径中航行的条件 。
This article introduces the basic concepts of the Spherical Geometry, the basic formula (Sine and Cosine Formula) of the spherical triangle and the application of the basic formula of spherical triangle in navigation for calculating the altitude and azimuth of celestial bodies.
文章介绍了球面几何的一些基本概念和球面三角形的基本公式(正余弦定理),以及球面三角形的基本公式在航海学中求天体计算高度和计算方位中的应用。
Based on the two spacecrafts geometric relationship in spherical triangles,the kinematical model was modeled and proved to be available.
介绍了基于球面三角形求解机动时间和方位角的航天器交会运动学模型,并通过计算证明方法的可行性,这类机动不受时间约束,是多冲量交会机动的崭新思路。
(Dead Reckoning) position, which carries out it by solving spherical triangle.
用解球面三角形的方法,通过两天体的球面距离,求得星位角,从而求得船位的经纬度。
A spherical center three surface angle can be directly built in accordance with the space angle, which makes up a spherical triangle, then the space angle can be calculated using the method of calculating the spherical triangle.
即对空间角度可直接建立球心三面角构成球面三角形，并通过计算球面三角形的方法求解空间角度。
the trigonometry of spherical triangles.
球面三角形的三角学。
spherical trigonometry
球面三角 (法,学)
Spherical Surface Triangular BEM of Spherical Electrode in 3-D Electrostatic Fields
球形电极三维静电场的球面三角形边界元算法
CAD System for Spherical Triangle Based on OpenGL;
基于OpenGL的球面三角形的CAD系统
Some essential questions in remote sensing science and technology
基于等角比例投影的球面三角四叉树剖分模型
Students may be confronted with difficulties in the application of complicated formulae of Spherical Trigonometry.
球面三角公式繁杂,学生在实际运用时感到困难。
Application of Spherical Triangle in Spacecraft Rendezvous Maneuver;
球面三角形在航天器交会机动中的应用
the front pin in the triangular arrangement of ten pins.
三角形排列的保龄球的最前面一个。
Hierarchical Spatial Relation Reasoning Based on Spherical O-QTM Partition
基于球面四元三角网剖分的层次空间关系推理
Customization of a wide angle schematic eye by ocular wavefront tomography
眼球模型的三维重构-广角波面断层扫描(OWT)
cocked hat ; hat with the brim turned up on three sides
三角帽（帽檐三面卷起的）.
ditrigonal scalenohedral class
复三方偏三角面体类
Globalization,Total Factor Productivity and the Difference of Regional Economies;
全球化、全要素生产率与区域发展差异——基于珠三角、长三角和环渤海的面板数据分析
Use the Trigonometric Function Solutions of Fourth Order Equations to Study the Event Horizon of Non-sphere Symmetric and Non-stationary Black Hole
基于四次方程的三角解研究非球对称动态黑洞的“类视界面”
Hexagon nuts with raised face
GB/T804-1988球面六角螺母
A triangular frame for arranging billiard balls at the start of a game.
排放球的三角架在台球比赛之前用来排放球的三角架
any triangular sail set forward of the foremast.
在最前面的三角形的帆。
triangular shaped wire
断面为三角形的钢丝