文件系统，使用参数，栈。
蓝牙协议栈允许采用多种方法，包括rfcomm和object Exchange (OBEX)，在设备之间发送和接收文件。
The Bluetooth protocol stack lets you use several methods, including RFCOMM and Object Exchange (OBEX), to send and receive files between devices.
这意味着复杂的数据结构可以表示成类，Web服务栈能够自动将类属性映射到WSDL文件中定义的数据类型。
This means the complex data structures can be represented as classes and the Web Services stack will automatically map the class attributes to the data types defined in the WSDL file.
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