短语词组短语OBEX OPP 对象推送模式OBEX Explorer 文件总管OBEX PUSH 实现对象推送OBEX Application 标识OBEX OBject Exchange Protocol 对象交换协议OBEX File Transfer 文件传输Bluetooth File Transfer OBEX FTP 蓝牙文件传输irobex ir obex object exchange 红外对象交换协议 返回 obex