目标树是按照树形结构对目标或者设计标准进行组织的方法,它把不同的目标均归类到更高级的目标之下。
在源及目标树中选定的结点(使用鼠标右键)表示了特定的行为，描述如下。
Nodes selected in the source and target trees (with the right mouse button) show specific behavior, as described below.
将被拖放的端口类型结点复制到目标树中，连同其中包含的所有操作。
The dragged port type node is copied to the target tree along with all the operations it contains.
分析了产品的设计空间及设计问题关联因素，确立目标树，建立功能结构。
According to the space of product design, some connected factors with design problems are sought, the objective trees are established, and the function constructions are founded.
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