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在农业生产实际和科学实验中,大量地存在着水平数不等的试验,我们在第三讲第三节介绍过直接套用混合型正交表来安排这类试验的方法,但有一些试验
There are a large number of tests of varying levels in agricultural production practice and scientific experiments. We introduced the method of directly applying hybrid orthogonal tables to arrange such tests in the third section of Section III, but some experiments