With the development of computer science and technology and the popularity of the Internet, online chat has become an essential means of communication in daily life, while e (E-mail) but also a more efficient than traditional e-mail send and receive messages and more economical way. An integrated online chat and e-mail system can provide for people' s daily lives more convenient. The system Delphi7.0 as development tools, based on UDP protocol module to achieve net chat group chat or peer dialogue, based on SMTP protocol, POP3 protocol module to send and receive email messages.

基于双光纤光栅F-P滤波器的窄线宽可调谐掺铒光纤激光器.doc
毕业论文——徐君剑.doc

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