Understanding esu is crucial for studying electromagnetism.
海维赛德在电磁学领域做出了重大贡献。
Heaviside made significant contributions to the field of electromagnetism.
电磁学知识结构体系分为“静态”知识结构和“动态”知识结构。
Knowledge structures of both static state and dynamic state are included in the structural system of knowledge about electromagnetism .
dict.cnki.net
较系统地阐明了对称性分析在电磁学中的地位，并针对相应的教学内容提出了一种逻辑明晰的教学思路。
The role of symmetry analysis in teaching of electromagnetism is clarified systematically, and a logically clear teaching procedure for relevant contents is proposed.
lib.cqvip.com
文章先简单介绍了心脏电磁学的早期研究，然后对该领域的研究方法和研究进展做出综述。
First, a brief introduction is made to the early study of heart electromagnetism, then an overall description is given to the research methods and research progress in this field.
