想实现下图的样式:
自己实现的样式:
请问中间“目标和功能”那一行如何能做到像第一张图那样
代码:
% !TEX program= xelatex
\documentclass[a4paper]{ctexart}
\usepackage{ctex}
\usepackage{amsmath}
\begin{document}
$$
\text{概论}
\left\{
\begin{array}{l}
\text{特征}
\left\{
\begin{array}{l}
\left.
\begin{array}{l}
\text{并发} \\
\text{共享} \\
\end{array}
\right\}
\text{最基本} \\
\text{虚拟} \\
\text{异步} \\
\end{array}
\right.
\\
\text{目标和功能}
\left\{ \begin{array}{l}
\text{计算机系统资源的管理者} \\
\text{扩充机器} \\
\text{用户与计算机系统之间的接口}
\left\{ \begin{array}{l}
\text{命令接口} \\
\text{程序接口} \\
\text{GUI} \\
\end{array} \right. \\
\end{array} \right. \\
\text{发展} \\
\text{运行机制} \\
\text{体系结构}
\end{array}
\right.
$$
\end{document}