orthogonal matrix

例句：

1. 1. The system is orthogonal to the plane of the graph.
   该系统与图形平面正交。
2. 2. The orthogonal matrix is used to transform vectors in a way that preserves their magnitudes and angles.
   正交矩阵用于将向量转换，以保留其大小和角度。
3. 3. In linear algebra, an orthogonal matrix is one that has all its eigenvalues equal to 1.
   在线性代数中，一个正交矩阵是所有特征值都等于1的矩阵。