ph curve造句

• This paper present a sufficient and necessary condition of constructing quintic ph curves and analyze the geometric meaning of the control polygon
  本文给出了构成五次ph曲线的充要条件，分析了其控制多边形的几何意义。
• Quartic ph curves are studied . their contribution of cusps and inflections are discussed in this paper . a first - order hermite interpolation by quartic ph curves is obtained
  文中还研究了四次ph曲线，讨论了其尖点和拐点的分布情况，得出了四次ph曲线的一阶hermite插值的解。
• Nc machining requires " interpolation " algorithms that accurately and efficiently generate sequences of reference position , distributed according to a prescribed feedrate function , along the tool paths . this paper present a systematic derivation of the proper taylor series coefficients for variable feedrate interpolators . when the path is ph curves , detailed formulations for instances are presented where the feedrate v is specified as a constant , the function of the time t , the arc length s and the local curvature k
  对于nc加工要求插值算法沿着刀具路径准确、有效的生成参考点序列(根据预先指定的速率函数进行分布)的实际工程需要，本文系统地推导了变速率插值算子的泰勒系数，给出了当路径为ph曲线，速率v为常数，及时间t 、弧长s 、曲率k的函数时具体的插值算子。