Slow-wave systems generally employ periodic structures, and the electromagnetic waves transmitted therein are required to satisfy very complicated boundary conditions.
慢波系统一般采用周期性结构，其中传输的电磁波需要满足十分复杂的边界条件。
The magnetic field intensity of the solenoid used for travel wave tube and transport properties of electron beam in the slow wave system under its function is simulated with the electromagnetic code.
利用电磁场软件模拟了行波管电磁线包磁场，以及在电磁线包磁场作用下电子注在慢波系统中的运动特性。
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