求翻译：然后去掉要识别方程系数所在行，再去除要识别方程中非零系数所在列，例如判断第1个结构方程的识别状态。对于第1个方程，首先删除系数第一行，再删除第一、二、四、五、六列，则得到首先判断第1个结构方程的识别状态。对于第1个方程，有是什么意思？

To identify and then remove the equation coefficient where the line, then remove the column To identify nonzero coefficient equation, for example, to determine the identification of a structural equation state. For an equation, first delete the coefficient of the first line, then remove the first, s

You want to identify and then remove the Row Factor equation, and then to remove the parts you want to identify equation factor in column 1, for example a judgment of the structural equation identifies the state. For the first 1 equations, first delete the first row factor, then delete the first one

Then removes must distinguish the equation coefficient to be an expert to good expert, again removes must distinguish in the equation the non-vanishing coefficient in the row, for example judges the 1st structure equation the recognition condition.Regarding the 1st equation, first deletes the coeffi

Then remove row containing the coefficients of the equation to be recognized, and then remove the column to identify the equation with non-zero coefficients, such as judging the 1th identification of structural equation of State. 1th equation, first delete the coefficient of the first row, and then

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