平面三角形

The common method for obtaining the angle of the plane figure to projection plane is through the right-angled triangle method after getting the double-face projection of the plane figure on the basis of the conception of maximum oblique line.

求平面图形对投影面的倾角，通常需要知道平面图形的两面投影，利用最大斜度线的概念，通过直角三角形法求得。

Compilation of the plane trigonometry and spherical trigonometry book, spherical trigonometry to solve some problems in, and first proposed the introduction of auxiliary angle method to solve the triangle .

编撰了有关平面三角学和球面三角学的著作，解决了球面三角学中的若干难题，并首先提出引进辅助角的方法解三角形。

Compilation of the plane trigonometry and spherical trigonometry book, spherical trigonometry to solve some problems in, and first proposed the method to solve the introduction of auxiliary angle triangles .

编撰了有关平面三角学和球面三角学的著作，解决了球面三角学中的若干难题，并首先提出引进辅助角的方法解三角形。

Rytz Method ; maximum oblique line ; Right-angled Triangle Method ; plane figure ; projection plane ; dip angle ; conjugate diameter

里茨作图法；最大斜度线；直角三角形法；平面图形投影面；倾角；共轭直径

Then interpolating cubature formulae is given based on Lagrange interpolation formulae. Secondly it make use of the cubature formula on the triangle to construct cubature formulae on the correspondent spherical triangle.

通过把其定义域上的积分化为平面单纯形{u =(u1， u2， u3)： u1 + u2 + u3 = 1， u1， u2， u3〉0}上的积分，然后利用平面单纯形上数值积分公式给出其在球面三角形上的对d次齐次多项式精确成立的Gauss求积公式的构造方法。

We have proposed an arithmetic of this kind to eliminate the vertex in a circling way,ignoring the knaggy character and the deasil or anticlockwise direction of the plane polygon.

概述了平面多边形三角形剖分的各种算法，提出了一种不考虑多边形的凸凹性、顶点顺时针或逆时针走向循环消除顶点的平面多边形三角剖分算法，并给出了实例。

It can reach the submaxilla edge in part of old people; The bottom forms one curve following the eye lower eyelid; The medial terminal line is nasolabial; The lateral terminal line is from the junct of malar bone and malar arch to the angulus oris inferolateral or submaxilla edge.

皮下脂肪有一个近似三角形增厚的区域，三角形的尖位于口角外下方，约平下颌角平面，在部分老年人可达下颌缘；底部沿眶下缘呈一弧线；内侧界为鼻唇沟；外侧界从颧骨和颧弓交界到达口角外下方或下颌缘。

Obtained the way of compositions are all based on the basic figures of circularity,quadrilateral and triangular,and all the landscape plane included balance,contrast,repetition,etc.Also combined the art of the formation of plane from Germans Bouhause with Chinese culture.

并且得出任何图形都是以圆形、方形、三角形为基础图形，任何景观平面中都包含了均衡、对比、重复等构图方式，并将源于德国包豪斯的平面构成艺术与中国文化相结合。

The conditions for the existence of crank for Watt's mechanism, a basic type of one-degree-of-freedom planar six-bar mechanism,are investigated with the triangular dividing method and the method of instantaneous fixing of the driving bar.

本文采用平面杆机构的三角形划分法及主动杆瞬时凝结法探讨了单自由度平面六杆机构的一种基本型式——Watt型机构的曲柄存在条件；并用取极限的方法得到了其诱导机构的曲柄存在条件。

After collecting the surface points of the Confucius statue and the tunnel of mineshaft with 3D Laser Scanner, author realized the modeling of Confucius statue and the tunnel of mineshaft by programming.

而生成等值线一般需要将坐标点投影到某一平上建立二维三角形格网，如地形图的等高线是在平面上建立狄罗里三角形后生成。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。