只要记住：如果你要用一个方阵，乘以一个列向量，当矩阵在左，向量在右的时候乘积才有意义。
It's just something to remember: if you have a square matrix times a column vector, the product that makes sense is with the matrix on the left, and the vector on the right.
此外，对照明负荷、最佳安装角度、前后排间距及方阵排、列数都进行了详细的计算。
In addition, the lighting load, optimal installation Angle, the number of row and column, the space between front and back of PV array have been calculated in detail.
此外，对照明负荷、最佳安装角度、前后排间距及方阵排、列数都进行了详细的计算。
In addition, the lighting load, optimal installation Angle, the number of row and column, the space between front and back of PV array have been calculated in detail.
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