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一、引言在上两讲我们已经研究过用正交试验设计来选择分析条件和构造回归方程。正交试验设计利用均衡分散性和整齐可比性从全面试验中选出部分点进行试验,简单比较因素各水平试验指标的平均值估计各因素的效应,减小了试验工作量和计算工作量,而仍能得到基本上反映全面情况的试验结果,是一种优越性很大的试验设计方法。但是当试验中因素数或其水
I. INTRODUCTION In the last two talks, we have studied the use of orthogonal experimental design to select the analytical conditions and construct regression equations. Orthogonal experimental design using the balanced decentralization and neat comparability from the comprehensive test selected part of the point of the test, a simple comparison of the level of the average test indicators to estimate the effect of various factors, reducing the test workload and calculate the workload, But still can get basically reflect the test results of the overall situation, is a superiority of the experimental design method. But when the factor of the experiment or its water