1) spiral motion
螺线运动
1.
A small ball is making circular motion at the uniform velocity,the centripetal force has suddenly increased,it is proved that the small ball will generally make a spiral motion.
详细讨论了当向心力突然增大后,原来作匀速圆周运动的小球其运动轨迹的变化情况,证明了小球将作螺线运动。
2) spiral
螺线
1.
Steinhaus Dimension of Spirals;
螺线的Steinhaus维数
2.
On the Representation of Spiral by Normalized B-Basis;
基于规范B基表示的空间螺线相关研究
3.
Based on analysis of interpolation mechanism for parametric curve, in this paper, 2D and 3D spiral curves interpolation algorithms with constant feedrate are developed on the one hand and the contour errors and corresponding approximate calculation formulations are discussed on the other.
基于参数曲线恒速插补机理分析 ,建立了平面和空间螺线的恒速插补算法 ,讨论了插补误差及其有效近似计算 ,通过 Auto LISP编程进行实例插补模拟。
3) logarithmic spiral
对数螺线
1.
Calculation and Analysis of the Contact Strength of Logarithmic Spiral Profile Connection;
对数螺线型面联接接触强度分析与计算
2.
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。
3.
The automatic generation of logarithmic spiral is achieved by means of the language of VBA embedded in AutoCAD.
提出铲齿成形铣刀齿背曲线的最佳线形应是对数螺线,而后运用AutoCAD的内嵌编程语言VBA,实现了对数螺线齿背曲线的自动生成。
4) Archimedes spiral
Archimedes螺线
1.
Design and machining of an Archimedes spiral Fresnel lens;
Archimedes螺线式Fresnel透镜的设计及加工方法
5) elliptical spiral
椭螺线
6) semi-circled spiral
半圆螺线
1.
Design calculation of the semi-circled spiral in the SHE;
螺旋板换热器半圆螺线设计计算
参考词条
补充资料：南美洲运动会和南十字运动会
1922年在巴西举行过1届南美洲运动会,参加者限于南美洲国家。1978年在玻利维亚举行过 1届南十字运动会，参加国有阿根廷、玻利维亚、巴西、智利、厄瓜多尔、巴拉圭、秘鲁和乌拉圭8国。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。