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本文根据孔兹干曲线式，推导出伪望高公式，很好地从理论上解决了这个问题，并为其能广泛应用，提出了合理的方法
In this paper, based on the Kongtzan curve, the formula for the formula of expectation is deduced, and the problem is well solved in theory. For its wide application, a reasonable method is put forward