$$\mathrm{一个}\otimes B=\left(\begin{array}{ccc}\begin{array}{cc}{\mathrm{一个}}_{11}B& {\mathrm{一个}}_{12}B\end{array}& \cdots & {\mathrm{一个}}_{1n}B\\ \begin{array}{cc}\begin{array}{c}{\mathrm{一个}}_{21}B\\ ⋮\end{array}& \begin{array}{c}{\mathrm{一个}}_{22}B\\ ⋮\end{array}\end{array}& \begin{array}{c}\cdots \\ \ddots \end{array}& \begin{array}{c}{\mathrm{一个}}_{2n}B\\ ⋮\end{array}\\ \begin{array}{cc}{\mathrm{一个}}_{米1}B& {\mathrm{一个}}_{米2}B\end{array}& \cdots & {\mathrm{一个}}_{米n}B\end{array}\right]。$$

$$\begin{array}{l}\mathrm{一个}=\left(\begin{array}{cc}1& -2\\ -1& 0\end{array}\right],B=\left(\begin{array}{cc}4& -3\\ 2& 3\end{array}\right]\\ \\ \mathrm{一个}\otimes B=\left(\begin{array}{cccc}1·4& 1·-3& -2·4& -2·-3\\ 1·2& 1·3& -2·2& -2·3\\ -1·4& -1·-3& 0·4& 0·-3\\ -1·2& -1·3& 0·2& 0·3\end{array}\right]=\left(\begin{array}{cccc}4& -3& -8& 6\\ 2& 3& -4& -6\\ -4& 3& 0& 0\\ -2& -3& 0& 0\end{array}\right]。\end{array}$$