他写有关电磁的博士论文。

He wrote his doctoral thesis on electromagnetism.

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电磁阀是用电磁的效应进行控制，主要的控制方式由继电器控制。

Electromagnetic valve is used to control the effects of electromagnetic, the main control by the control relay.

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无线电波是一种我们看不见的电磁辐射。

Radiowaves are electromagnetic radiation that we can't see.

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Students have a lot of trouble with the concepts because there is not much intuition about electromagnetic phenomenon.

学生们对于理解概念,觉得很困难,因为对于电磁学现象,只有很少能凭直觉理解的。

麻省理工公开课 - 媒体、教育、市场课程节选

From next term we try to move it into the own term version of electromagnetism, which are up till now has been taught in the lecture-station format.

从下学期起我们将搬去,电磁学自己的实验室，现在这门课还是用,讲座-背诵型方式讲授。

麻省理工公开课 - 媒体、教育、市场课程节选

In fact, until we do electricity and magnetism the next semester, everything's going to be based on just the laws of Newton.

其实,在下学期学习电磁学之前,所有的内容都是基于牛顿定律的

耶鲁公开课 - 基础物理课程节选