Discover the hierarchical tree structure classes by finding the class in the Model Explorer, double-click to open the class in the editor, and press F4 to open the hierarchy tree.

通过寻找模型搜索器中的类，找出等级树状结构类，双击打开编辑器中的类，按下f 4以打开等级树。

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Hierarchy of class template is generated due to the combination of class template and inheritance.

由于类模板与继承的结合，产生了所谓的类模板的层次结构。

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According to class-object level, structure level, subject level, attribute level and service level, we analysis the class hierarchy of hydraulic system, their interrelation and their communication.

按照类——对象层、结构层、主题层、属性层和服务层五个层次分析了液压系统的类层次构成及其连接与通信。

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Hence "Downton" has characters who are skeptical of class hierarchy and ones who worship it.

WSJ: The Weekend Interview with Julian Fellowes: The Anti-Snobbery of 'Downton Abbey'

He scored 1, 242 first-class runs in the 2009 season and his form attracted the attention of the England hierarchy, who fast-tracked him into the Performance Programme even though he does not qualify to play until February 2010.

BBC: Craig Kieswetter signs new three-year Somerset contract