查询词典 concave line

As early as 400 BC for many years, China's "Mojing" documented book on the forward line of light, light reflection, as well as the plane mirror, concave mirror, convex imaging phenomenon.

早在公元前四百多年，我国的《墨经》一书就详细记载了光的直线前进、光的反射，以及平面镜、凹面镜、凸面镜的成像现象。

A new polygon filling method——polygon trapezoidal decomposition filling method——is put forward and realized. An analytical comparing between its time complexity and that of the classical methods shows that it is faster than scan-line algorithm in the case of complex concave polygon.

提出了一条新的多边形填充思路——多边形梯形网格剖分填充法，实现了该算法并将其时间复杂度与经典的有序边表算法进行了比较，说明该方法在复杂的凹多边形情况下处理速度较有序边表快。

And the use of convex and concave parts MasterCAM mode of a processing line tool design and manufacturing process simulation.

并运用MasterCAM 对零件的凸凹模进行了加工走刀路线的设计并模拟其加工过程。

The problems of point - line - plane - volume; the facts of square - circle - triangle; the mysteries of central - peripheral - frontal - oblique - concave - convex; the right angle and perpendicular; of scale and position; the interest in post- lintel, wall-slab, vertical-horizontal; the arguments of two-dimensional and three-dimensional space; the extent of a limited field; the meaning of implied extension; the meaning of plan, of section, of spatial expansion - spatial contraction - spatial compression - spatial tension; the direction of regulating lines, of grids; the relationships of figure to ground, or number to proportion, of measurement to scale, of symmetry to asymmetry, of diamond to diagonal; the hidden forces, the ideas of configuration; the static, the dynamic: all these begin to take on the form of a vocabulary.

点-线-面-体的课题；正方形-圆形-三角形的事实；中央-边缘-正对-倾斜-凹入-凸出的奥秘；直角与垂直；尺度与位置；柱-梁、墙-板、竖直-水平的旨趣；两维与三维空间的思辩；局促场所的极限；暗示延伸的含意；平面、剖面、空间扩充-空间收缩-空间挤压-空间张拉的意义；控制线与网格的方向；图与底、数字与比例、尺寸与尺度、对称与非对称、菱形与对角线的关系；暗藏的力量、构型的想法；静态、动态━这一切都将发展成为语汇的形式。

The company has computer-generated, flat, concave,machine, sheet offset press, water-based printing cartons, A, B, E corrugated cardboard production line, polishing, bronzing, laminating, gold and silver cards, paperhanging, cutting, decorative paper.

纸制品包装企业。公司拥有电脑制作、平、凹、凸印机，全张胶印机、水性纸箱印刷机，A、B、E瓦楞纸板生产线、上光，烫金，复膜，金银卡，裱糊，模切，纸面装饰。

PMMA compound X-ray lenses are composed of a group of 40 plano-concave elementary lenses positioned in line with axial symmetry.

用LIGA技术中的软 X射线光刻方法制作了PMMA材料 X射线组合透镜。

Keywords: Computer graphics,concave polygonal window,line clipping,intersection calculation.

对于一般的多边形窗口的线剪裁，目前尚无有效的算法。

However, non-uniform settlement of wharf platform may occur due to large upper load and soil creep deformation, and bulkhead line may be concave or convex which will affect wharfs usage and beauty and cause the horizontal displacement of sheet-pile wall.

但是，在上部荷载较大且土体蠕变等因素下，码头作业平台往往会出现不均匀沉降，码头前沿线可能出现凹凸变形，从而影响码头的使用和美观，同时板桩墙不可避免会出现水平位移。

Mushroom finish gives clear line and obvious convex-concave surface, gives stereoscopic effect, therefore it is widely uses in the surround-building and exterior wall decoration.

这时，防滑是主要目的。蘑菇石以其清晰的线条和明显的凸凹面，给人以丰富的立体感，故用于裙楼和部分场合的外墙面的装饰装修。

Companies continuously improve existing products in the technical level, has started the introduction of foreign technology, the development of polyvinyl chloride pipe production equipment, aluminum veneer production line, with no air shaft plate, floating roller tension, automatic AC inverter Technology, PLC touch-screen control of the domestic first-class new generation of concave printing presses.

公司在不断提高现有产品技术水平的同时，已经着手引进国外技术，开发聚氯乙烯管材生产设备，铝单板生产线，无轴气动装板、浮辊张力、全自动交流变频技术、PLC触摸屏控制等新一代国内一流凹印刷机。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了