查询词典 concave polygon

Also the constructed curve is a shape-preserving curve for the original curve. We can also adjust the shape of curves by parameters of trigonometric uniform polynomial curve to approach the polygon closer. The general trigonometric polynomial curves with m degree and C(superscript 2m-1)(m=1, 2, 3) continuity are further presented.

除了通过切点参数，还可以通过三角均匀多项式曲线参数来调整曲线形状，使所得曲线更加逼近多边形，并可进一步、类似地可构造与给定多边形相切的C(上标 2m-1)(m=1， 2， 3)连续的m次三角多项式曲线。

Determine the in plane displacement fields inside a large grain and around the conjunction of three grains. Results show that the in plane deformation fields are continuous in side the grain. It is also proved that it is reasonable to use the polygon element interpolation to calculate the deformation fields.

对大晶粒内部及三晶粒交点附近的面内位移场进行了精细测定，指出：晶粒内部的面内变形基本是连续的，这也证实了本文采用晶粒多边形作插值计算是符合材料的细观变形特征的，是合理的。

The part represented by the polygon of the half section profile in its axis plane and cutter's trajectories for recording and arranging machining errors data are presented based on the analysis of the geometrical characteristics of the part and machining in turning process.

根据车削加工工件的几何外形和成形特点，提出了包含加工误差信息的回转体类工件半剖轮廓多边形建模方法和记录、组织加工误差信息的刀具轨迹法。

The basic molding tool provides the cube, the spheroid, the hemispheroid, the circular cylinder, the circular pipe, the ring, the centrum and the polygon.

基本造型工具提供立方体，球体，半球体，圆柱体、圆管、圆环，椎体和多边形。

According to characters of projective view an algorithm for the removal hidden lines from engineering drawing is presented. The presented algorithm removes hidden lines by sorting display planes according to thire depth and selecting area operation of projective polygon.

在微机环境下，开发了一个图形显示、人机交互的图形原型系统；在基于物空间APPEL算法基础上进行改进，设计和实现了一个零件实体模型的隐线消除算法、简单光照模型下的浓淡图生成算法。

The Snow White trench is near the center of a relatively flat hummock, or polygon, named "Cheshire Cat," where scientists predict there will be more soil layers or thicker soil above possible white material.

矿物质中如果含有水，说明火星表面岩石曾经存在于液态水环境。迄今为止，"勇气"号和"机遇"号火星漫游者已经发现了赤道附近地表风化层与水发生相互影响的证据。

In addition to these standard room-type chamber, the small size there are a lot of triangle-shaped hypotenuse, irregular polygon strange chamber, and only one side to light, once separated, they form a dark chamber, the there is no natural ventilation and lighting, this unreasonable is obvious.

除了这些标准客房型商会，规模小，有很多三角型斜边，不规则多边形奇怪商会，只有一方轻，一旦分开，他们组成一个黑暗的房间，在那里没有自然通风和照明，这不合理是显而易见的。

Furthermore, author integrated the vectorgraph technology and database, the program can draw the ichnography of coal mine automatically and query the information of geological survey by point selecting or in rectangle, circular and any polygon drawed by user on the ichnography.

同时将矢量图形技术与煤矿地测数据库结合起来，实现了自动绘制简单的矿区平面图和各种相关的矢量图形操作，并在图上能够进行点选查询和矩形、圆形、任意多边形区域内的地质数据的动态查询。

Aiming at the two propositions (the theorem of three concurrent forces balance and the inertia moment of multimetric polygon), the paper represents and theoretically proves that the condition of three concurrent forces balance should be modified, i.

针对建筑力学中的三力平衡汇交定理和正n边形截面的惯性矩两个命题，提出了应该对三力平衡汇交定理的条件加以修正，即对三力平衡问题中的"三力平行"这种特殊情况不必设条件加以限制，并从理论上加以证明。

An interior angle of a polygon that is greater than 180 degrees.

多角形内部的大于度的角。

The receding calculations and experiment analyses in this subject are built on the blood cast of pig tongue.

本研究课题的前期工作是采用猪舌血管铸型模拟人舌而进行的数值计算与实验分析。

"Each human infection constitutes an opportunity for genetic modification of the virus through reassortment, mutation, or both...."

&每一次人类的感染都暗藏着一次基因修改的机会，无论是通过病毒的整合、突变或者兼而有之。。。。&