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1)  offset curve and offset surface
等距线等距面
2)  offset of curves on spherical surfaces
球面上的等距线
1.
An algorithm was put forward to construct the offset of curves on spherical surfaces.
首先,用有理二次Bézier曲线生成球面上的圆弧[1],实现不同圆弧间的拼接,使其达到C1连续,来构造球面上的组合曲线,然后对该组合曲线利用测地线技术求其在球面上的等距线,并通过点与点求交方法来检测所生成等距线的自相交现象,同时去除自交情况。
3)  isometric polygonal profile
等距型面
1.
A measuring system of isometric polygonal shaft is designed based on isometric polygonal profile's outlining characters and its measuring method and data handling are studied.
根据等距型面曲线的廓形特征设计了一个新型的等距面轴的检测系统并研究了其检测方法和数据处理,并应用实例与在三坐标测量机上测量的结果进行了相对比较。
2.
The outlining characters of the isometric polygonal profile are analyzed according to the equation gotten by curve fitting, based on the three points measuring method, a new measuring method for the isometric polygonal shaft is presented, and a new measuring system is designed.
根据曲线拟合得到的等距型面方程分析了其廓形特征,以常规的三点测量法为基础,提出了一种新的等距型面轴检测方法,设计了一个新型检测系统。
3.
The formed principle and CNC grinding machining method for isometric polygonal profile are studied.
对等距型面的成形原理和数控磨削加工方法进行了系统深入的研究。
4)  isometric profile
等距型面
1.
Design about tool grinder refitting system for NC machining of Isometric profile;
数控加工等距型面的工具磨床改装系统设计
2.
The forming equation and motion assign of isometric profile are introduced.
研究了等距型面的成型方程和运动分配 ,介绍了用于等距型面加工的工具磨床机械改装及PLC软件开发。
3.
Besides the advantages of convenience of measurement,assembly and disassembly,isometric profile non?key connection has the advantages of self?centering,small concentration of stresses,high fatigue strength of axis and hub.
等距型面无键联接除了具有测量和装拆方便外,还具有自动定心、应力集中小、轴和毂孔的疲劳强度高等优点。
5)  equidistant profile
等距型面
1.
Theoretical research of milling equidistant profile axles on numerically-controlled machine tool;
等距型面轴数控铣削的问题探讨
2.
Theoretical research of milling equidistant profile axes on numerically-controlled machine tool;
数控机床铣削等距型面轴的理论研究
3.
Movement modeling and simulation on machining equidistant profile by orthogonal turn-milling
正交车铣等距型面的运动建模及仿真
6)  isometric polygonal topless cone
等距锥面
补充资料:等距抽样
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性质:又称系统抽样或机械抽样。将总体中各样品按某标志顺序(如按时间顺序、地区顺序或其他人为的顺序)排列,然后依照固定顺序或间隔来抽样,比方说先由头k个单位中抽一个单位样本,以后每隔k个单位抽取一个单位样本等。等距抽样的优点。能保证样本单位在总体中均匀地分布,抽样方法简便,易于实施。

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