These tools can be used to select specific attributes from a database or create a new feature class that consists of a smaller area.
这些工具可用于从数据库中选取特定属性或创建一个由较小区域构成的新的元素类，。
These tools can be used to select specific attributes from a database or create a new feature class that consists of a smaller area.
这些工具可用于从数据库中选取特定属性或创建一个由较小区域构成的新的元素类，。
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