对于并发多对象系统，可以使用UML协同图描述对象间的动态交互和链接关系。
UML collaboration diagrams describe the dynamic interactions and associations among the objects in concurrent multi-object system.
介绍了1：25万协同图的主要特点和生产流程及协同图数字制图系统的主要功能。
Introducing the main character and producing process of 1:250,000 joint operation maps.
图31说明这个解决方案提供的集成，说明解决方案的各个部分如何协同工作。
The integrations provided with the solution are illustrated in Figure 31, which show how the various pieces of the solution work together.
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