Comments, text, geometric shapes and other diagram-local annotations.
注释，文本，几何形状以及其他的图表位置注释。
2
After tracing and analyzing the geometric structure of control system block diagram, thereby the corresponding topological structure is generated by graph analyzer.
图形分析器通过对控制系统方框图的几何结构进行跟踪探索和结构分析，生成相应的拓扑结构。
3
In light of graph theory, here establishes the criterion for judging geometric compatibility of the synthesization diagram of planetary transmission.