查询词典 Archimedes spiral

A neat solution of the quadrature problem can be achieved with the spiral of Archimedes.

用阿基米德螺线能成功地解决化圆为方的问题，方法很简单。

Archimedes Screw: A spiral propeller with a fixed axle at the centre invented by ancient Greek man Archimedes.

阿基米德螺旋：它是古希腊的阿基米德发明的固定于轴心的螺旋推进器。

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

Polar-coordinate NC Tool accept 'G0l X,Z,C' instruction to complete a resultant Archimedes Spiral trails, Which is composed of a rotational coordinateand a linear motion.

极坐标数控机床接受"G01 X，Z，C"格式的极坐标指令，完成C抽旋转坐标和Z轴线性坐标的合成运动轨迹－阿基米德螺线轨迹运动。

In the paper, on the basis of aggregation of previous studies, the development of optical technology and development trends at home and abroad are introduced, the principle of Fresnel lens is summarized. In accordance with its principle, circle equidistant steps Fresnel lens design is described. And on this basis, based on Fresnel design, also based on a continuous upward spiral of the plane curve concept, incidence surface and the backlight is set up to greet Archimedes - Fresnel lens design formula and the Second parabolic type Fresnel lens design formula, and on this basis, the advantages and disadvantages of the three designs is discussed.

本文在充分了解非球面光学技术在国内外的发展状况和趋势的基础上，同时从菲涅尔透镜的光学原理出发，并根据它的工作原理推导了圆环等距菲涅尔透镜的设计步骤，并在此基础上依据菲涅尔的设计思想，同时依据平面曲线的连续又呈螺旋的构思，推导出了迎光面和背光面阿基米德型菲涅尔透镜的设计公式和二次抛物面型菲涅尔透镜的设计公式，并在此基础上讨论了这三种设计各自的优缺点。

However, logarithmic spiral can be used to substitute for the Archimedes curve to solve such problems and guarantee the stability of cutter machinability .

传统的阿基米德螺线齿背的铲齿成形铣刀在重磨前刀面后，切削刃上各点的后角将发生变化，从而影响刀具切削性能的稳定。

However, logarithmic spiral can be used to substitute for the Archimedes curve to solve such problems and guarantee the stability of cutter machinability.

若改用对数螺线作为铣刀铲背曲线，则克服了阿基米德螺线的不足。

Archimedes obtained the parabolic arch, spiral, circular area and volume as well as the ellipsoid, parabolic complex geometry and physical size.

阿基米德求得了抛物线弓形、螺线、圆形的面积和体积以及椭球体、抛物面体等复杂几何体的体积。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。