此文档是有关磁共振方面的实验文章，我们做电子的人员硬件并不是很扎实，假如大家在做项目之前能做这样的实验，我想项目成功的概率将会大增-This document is related to magnetic resonance aspects of experimental articles, we have the personnel to do electronic hardware is not very solid, if to do projects in the U.S. can do