一、前言 七十年代以来,椭园测试技术在国内、外得到越来越广泛的应用。这种测量方法的主要优点是测量灵敏、精度高。且测量过程是非破坏性的。但椭园术的数据处理,则面临超越方程的求解问题。由于数据类型是复数,且要求数据量大、精度高。人们以往对它的处理需花费大量的时间和精力。引入微型计算机以后,为自动处理提供了有力的工具。但以往多数系采用计算机查找的方式,来 I. Preface Since the seventies, the technology of ellipse test has been applied more and more widely both at home and abroad. The main advantage of this measurement method is sensitive measurement, high accuracy. And the measurement process is non-destructive. However, the data processing of elliptical surgery faces the problem of solving the equation. As the data types are complex, and requires a large amount of data, high precision. People used to deal with it takes a lot of time and effort. The introduction of microcomputers provides a powerful tool for automated processing. However, most of the past, the use of computer search to the way