在此，我还要感谢在一起愉快的度过毕业设计的同门，正是由于你们的帮助和支

Here, I would also like to thank the colleagues who spent the graduation project happily together. It is because of your help and support that I can overcome the difficulties and doubts one by one until the successful completion of this article. Special thanks to all of me. The professional teacher has done a lot of work on this subject and gave me a lot of help. When the thesis is about to be completed, my mood cannot be calm. From the beginning of the project to the successful completion of the thesis, how many respectable teachers, classmates, and friends have given me speechless help, please accept my sincere thanks here! Finally, I would also like to thank the parents who cultivated my hard work when I grew up. Thank you!

Here, I would also like to thank together happy to spend the graduation design of the same door, it is because of your help and support, I can overcome one by one difficulties and doubts, until the successful completion of this article, but also to thank my professional teachers, on this subject has done a lot of work, give me a lot of help. In the paper is about to complete, my mood can not be calm, from the beginning into the subject to the successful completion of the paper, how many respectable teachers, classmates, friends gave me silent help, here please accept my sincere thanks! Finally, I would also like to thank the parents who raised me to grow up with hard work, thank you!

在此，我还要感谢在一起愉快的度过毕业设计的同门，正是由于你们的帮助和支持，我才能克服一个一个的困难和疑惑，直至本文的顺利完成，还要特别感谢我的各位专业课老师，对本课题做了不少工作，给予我不少的帮助。在论文即将完成之际，我的心情无法平静，从开始进入课题到论文的顺利完成，有多少可敬的师长、同学、朋友给了我无言的帮助，在这里请接受我诚挚的谢意！最后我还要感谢培养我长大含辛茹苦的父母，谢谢你们！<br>