Function DriveExists(DriveSpec As String) As Boolean 某一磁盘是否存在 Property Drives As Drives 唯一的一个属性,取得系统中所有的磁盘 Function FileExists(FileSpec As String) As Boolean 文件是否存在 ..
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数据模型使用一个 规则来识别唯一可以识别类的实例的属性。
The data model uses an stereotype to identify attributes that uniquely identify instances of the containing class.
此结点有一个属性，即它的唯一标识符——由1到12个字符组成的标签。
A property of this node is its unique identifier — a 1 to 12 character label.
否则，我就不得不构造一个唯一的ID(不像顶级资源那样自然)，并在rdf： about属性中使用XPointer，或某个其他技巧。
Otherwise I would have had to make up a unique ID (not as natural as for the top-level resources), used XPointer in an RDF: about attribute, or some other gimmick.
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