A simple method of solving an orthogonal transformation with a primary transformation is presented by change quadric form into canonical form. 給出了利用初等變換求一個(gè)正交變換化實(shí)二次型為標準形的簡(jiǎn)便方法。
Through an orthogonal transformation of coordinates systems, the eigen-equations of the LWL optical vibrations in single-walled BN nanotubes are obtained. 并通過(guò)坐標系的正交變換，得到了單壁硼氮納米管中長(cháng)波光學(xué)振動(dòng)的本征方程。
