建议你看看下面这些文章:
EMI-EMC知识讲座(一)电磁兼容介绍
https://www.safetyemc.cn/emc/200511/02/160.html
EMI、EMS & EMC三者之间的关系
https://www.safetyemc.cn/emc/201005/22/1073.html
EMC工程师必须具备的八大技能
https://www.safetyemc.cn/emc/201207/05/1000.html