For example, if an element child inherits from element parent, the schema tree for child will include a group for parent that is based on its type.
例如，如果一个子元素继承自父元素，子元素的架构树将包含一个基于其类型的父元素组。
Tree structure view: in this format, the WBS is depicted using a tree structure with each child element connected to the parent element through a line.
树状视图：在这种格式中，用树状结构来体现WBS，每一个子元素都由连接线连到父元素上。
A tree is a hierarchical structure that defines a parent-child relationship.
树是一个定义了“父子”关系的层次结构。
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