This interface specifies the signature for a factory that takes a DataReader type and creates a domain object from it.
这个接口为一个工厂定义了使用datareader类型创建一个域(domain)对象的签名。
The DataReader class can incrementally load the results of the same query and present a single row at a time to an application.
datareader类可以递增地加载同一查询的结果，并且一次向应用程序提交单个行。
The DataReader class can incrementally load the results of the same query and present a single row at a time to an application.
datareader类可以递增地加载同一查询的结果，并且一次向应用程序提交单个行。
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