三角

The errors and area limits caused by the lunar curvature were avoided in this model established under the Selenocentric Orthogonal Coordinate System, the accidental errors of exterior line elements were reduced by orbit fitting and interpolation, the polynomial orders of systematic errors in satellite orbits were decreased with their expression in the flying coordinate system moving and rotating with satellites, and the reliability of exterior orientation solution was enhanced under the condition of sparse and low accuracy control points by appending constraint of orbit and attitude parameters.

该模型通过在月心直角坐标系进行影像空中三角测量来消除月球曲率引起的误差和测图范围限制，通过轨道形状的拟合与插值来减小摄影时刻轨道位置的偶然误差，在飞行坐标系中建立轨道修正模型来减少定向参数的数目，对轨道和姿态增加约束条件来提高月面控制点数目稀少及精度低条件下外方位解算的精度与可靠性。

Curve the incision just proximal to the medial malleolus (Fig. 1-33, A) and divide the malleolus with an osteotome or small power saw; preserve the attachment of the deltoid ligament.

于内踝稍近侧做弧形切口(图1-33A)，用骨凿或小的动力锯截断内踝，保留三角韧带的附着点。

Cure the incision just proximal to the medial malleolus (Fig. 1-33, A) and diide the malleolus with an osteotome or small power saw; presere the attachment of the deltoid ligament.

于内踝稍近侧做弧形切口(图1-33A)，用骨凿或小的动力锯截断内踝，保留三角韧带的附着点。

You hold your arms just outside 90 degrees so they form a triangle, which is one of the strongest geometric shapes.

你只要将你的手臂90度伸出，使它们形成一个三角——这是最坚固的几何形状之一。

Intricate internal layered panels are offset with bold curvaceous fringes, colours are in pique, where interlocking repeated patterns of triangles and diamonds are infused with the couture shades of powder blue and periwinkle; soft peach and oyster; white gardenia and sea grey, fuschia and persimmon.

内部交错层叠的发片和极富线条感的醒目刘海相呼应；此季的颜色丰富炫目，反复运用的三角与钻石形区块中注入了特别调制的粉蓝色与玉螺色；柔和的桃色与牡蛎色；栀子花色与海灰色；梅红与柿色，使得整体发色交合有致。

BumAP3 genes are the only exception that sometimes grouped with Pachysandra genes as sister group to euAP3 clade.

BumAP3-1/2/3 是分析结果中的外，有时会和三角咪属植物的基因一起在核心真双子植物中成群，成为euAP3 基因群的姊妹群。

Popular multivariate visualization such as scatter plot matrix,parallel coordinates,star plot,Andrews plot have long history and widely application,but a united theoretical basis is absent up to now.

常用的多元数据可视化方法如散点图矩阵、平行坐标、雷达图、三角多项式图等具有悠久的历史和广泛的应用，但是长期以来缺乏统一的理论基础。

This paper stated the application of parallel link mechanism in modern machine tools,set up the error analysis as to parallel link mechanism in the virtucal-axis machine tool,derived the double triangular error equations of parallel link mechanicsm in its horizontal posture,analyzed the linearity and non-singularity of the error equations,thus giving the normal splution to the horizontal posture error.

该文对并联机构在现代机床上的应用作了论述，建立了虚拟轴机床并联机构的一种误差分析方法，应用坐标变换原理导出了双三角并联机构水平姿态时的误差方程组；分析了误差方程组的线性和非奇异性，给出了水平姿态时的位姿误差正解；对工作空间中心线的误差分布规律进行了仿真，绘制了其误差分布曲线。

A solid with six faces, each a parallelogram and each being parallel to the opposite face .

每个底部是边数相同的多面形且其它面是不等边四边形或平行四边形的旁面三角台。

The single and combined toxicity effects on Paramecium caudatum, Dugesia japonica and Cipangopaludia cathayensis exposed for special period (12, 24, 48 and 72h) in different Pb(superscript 2+) and Cd(superscript 2+) concentrations were studied by using toxic experiment techniques.

在特定时间(12、24、48、72h)内，研究了Pb(上标 2+)和Cd(上标 2+)对草履虫、三角涡虫和中华圆田螺3种水生动物的单一和联合毒性效应。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐