$$\mathit{一个}=\left(\begin{array}{ccc}{\mathit{一个}}_1& {\mathit{一个}}_2& {\mathit{一个}}_{3.}\end{array}\right],\mathit{b}=\left(\begin{array}{c}{\mathit{b}}_1\\ {\mathit{b}}_2\\ {\mathit{b}}_{3.}\\ {\mathit{b}}_4\end{array}\right],\mathit{一个}。*\mathit{b}=\left(\begin{array}{ccc}{\mathit{一个}}_1{\mathit{b}}_1& {\mathit{一个}}_2{\mathit{b}}_1& {\mathit{一个}}_{3.}{\mathit{b}}_1\\ {\mathit{一个}}_1{\mathit{b}}_2& {\mathit{一个}}_2{\mathit{b}}_2& {\mathit{一个}}_{3.}{\mathit{b}}_2\\ {\mathit{一个}}_1{\mathit{b}}_{3.}& {\mathit{一个}}_2{\mathit{b}}_{3.}& {\mathit{一个}}_{3.}{\mathit{b}}_{3.}\\ {\mathit{一个}}_1{\mathit{b}}_4& {\mathit{一个}}_2{\mathit{b}}_4& {\mathit{一个}}_{3.}{\mathit{b}}_4\end{array}\right]。$$