查询词典 geodesic curvature

"Because a straight line can be thought of as an arc of a circle of infinite radius, its curvature is zero."

直线可视为半径无穷大的圆，曲率为0

By means of uniting geometry with algebra, the arc length, tangent line, cotangent space and curvature of curve in four dimensional space are investigated, and the corresponding calculation formula in each cases are given.

用形数结合的观点研究了四维空间中曲线的弧长、切线、法空间和曲率问题，并给出了其计算公式。

This paper presents a new method——using mean radius of curvature to find the substitutive arc of Archimedes spiral,with which better precision can be obtained and the calculating formulas are very simple.

提出了一种用平均曲率半径法求阿基米德螺旋线的代用圆弧的新方法，其计算公式简单，并可得到较高的精度。

This paper presentes the spherometer of designed with the principle of Archimedes spiral, it has main advantage: both continuity measurement and direct reading to curvature radius of sphere, over against some classical instruments requested the conversion of the measuring result.

本文提出的应用阿基米德螺线原理设计的球面曲率计，克服了某些经典仪器需间接换算测量结果的缺陷，其主要优点是能直接读出所测球面的曲率半径和进行连续性测量，在使用上极为方便。

Spherometer ; Theory equation of sphere curvature radius ; Principle of Archimedes spiral.

球面曲率计；理论球径公式；阿基米德螺线原理

Objective To explore the value of curvature plane reconstruction with multislice spiral CT in the diagnosis of lumbar vertebral arthrosis.

目的 探讨多层螺旋CT曲面重建成像在诊断腰椎小关节病中的应用价值。

Actually a lot of flower in dweller home has noxiousness, bamboo of curvature of the spinal column is natural ashman, the harmful material in OK and cleared air, but also be poisonous plant; The four seasons of green trailing plants is evergreen and can absorb toxic gas, but juice juice is poisonous, come up against the skin to be able to be caused red urticant, feed by accident also can cause guttural ache; Evergreen belongs to lily division, poisonous place is in rhizome, feed by accident can appear disgusting, bellyacke, limb is algid insensible even; And the leaf juice of zebra evergreen c

其实居民家中好多花都有毒性，龟背竹是天然的清道夫，可以清除空气中的有害物质，但也是有毒植物；绿萝四季常青且能吸收有毒气体，但是液汁有毒，碰到皮肤会引起红痒，误食也会造成喉咙疼痛；万年青属百合科，有毒部位在根茎，误食会出现恶心。

Based on measured surface topography in conjunction with theoretical analysis, the characteristics of surface during wear process are studied, and the asperity density and asperity curvature radius are given for the first time.

本文通过对缸套表面的实测和分析，研究了在磨损前后表面形貌的变化，并首次定量描述了微凸体密度、微凸体曲率半径及其沿高度方向的变化。

Asphericity Q in 360 meridians could be calculated. This is the curvature coefficient for the corneal function of asphericity.

建立以角膜顶点为原点的笛卡儿空间三维坐标，绕Z轴旋转坐标，形成新的三维空间坐标系。

The asphericity, curvature and tilt of the human cornea measured using a videokeratoscope.

正常个体人眼角膜空间形态数学建模路线研究。

These rules reflect some inherent feature of self and nonself, and they are the basic detection criterion of GECISM.

这些规则反映了"自我"和"非我"的内在特征，是GECISM进行"非我"检测的判据。

Until today, the media from China and the outside world still uses the term "Post 89". Regardless to whether it is for commercial gimmick or convenience, everybody still remember "Post 89", a term which carries a strong Cantonese accent.

时至今日，国内外艺术媒体还是在沿用&后八九&这个称谓，不管当初是为了商业噱头还是容易上口好记，反正大家现在是记住了&后八九&这个广东口音很重的词。