说明：  "introduction to the finite element method in electromagnetics"是一本特别好的FEM的入门书籍，源码已上载。 这本书才115页，但是把FEM讲的很细，读完之后再读金建明的书就特别容易了。
(introduction to the finite element method in electromagnetics is a particularly good introductory FEM books, source code has been uploaded. This book is only 115, but the FEM stresses very small payment to read after reading the book Jianming particularly easy.)