在理论分析(或计算)的基础上经过实验加以修正而无法用方程给出的曲线,本文把它叫做实验曲线,如实用堰的克里格尔-奥菲采洛夫曲线(简称克-奥曲线)、水轮机蜗壳的外形曲线(简称蜗形曲线)等等。这些曲线通常以函数表(即坐标表)形式给出。在施工放样中,当需要提高实验曲线的放 In the theoretical analysis (or calculation) based on the experiment to be amended and can not be given by the equation curve, this paper called the experimental curve, such as the practical weir of the Krieger - Aofei Sa Luo curve (referred to as Ke - Austria Curve), turbine profile curve (referred to as snail curve) and so on. These curves are usually given as a table of functions (ie, coordinate tables). In the construction of lofting, when the need to improve the experimental curve release