形成附件本身的二进制文件与SOAP消息主体无关，所以不会作为消息的一部分被解析，由此减小了昂贵的处理开销。
The binary data that forms the attachment itself is separate from the SOAP message body so it is not parsed as part of a message, eliminating an expensive processing overhead.
形成附件本身的二进制文件与SOAP消息主体无关，所以不会作为消息的一部分被解析，由此减小了昂贵的处理开销。
The binary data that forms the attachment itself is separate from the SOAP message body so it is not parsed as part of a message, eliminating an expensive processing overhead.
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