- 
				           		The mechanical CAD graphics library was designed. The steps and interface were put forward.
						        										 	
						        					            	 设计了机构CAD图形库,并提出了该图形库生成步骤和人机交互界面。
								    				            	 youdao 
- 
				           		The mechanical CAD graphics library was designed. The steps and interface were put forward.
						        										 	
						        					            	 设计了机构CAD图形库,并提出了该图形库生成步骤和人机交互界面。
								    				            	 youdao