应用正交设计实验方法和方差分析。
Methods: Orthogonal design and analysis of variance were used.
本文利用实验数据建立一元线性回归方程；回归直线，并用方差分析法和相关系数法检验方程的有效性。
This paper use experimental data to set up linear regression equation with unitary and regression straight line, to use variance analysis and related coefficient to test validity of equation.
运用正交设计实验方法进行了配方选择，采用方差分析方法进行了可靠性验证。
The formulation was chosen by orthogonal design experiment method, and the reliability was examined by variance analysis.
实验方法：周期图法、自相关法和协方差法。
Experimental Methods : Chart cycle, since the correlation and covariance method.
实验方法：周期图法、自相关法和协方差法。
Experimental Methods : Chart cycle, since the correlation and covariance method.
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