The electromagnetism parameter can be adjusted by use of the character of Rare-earth element.
利用稀土元素的特性,可以调节铁氧体磁性材料的电磁参数。
参考来源 - 柠檬酸法合成的铁氧体粉末的结构与电磁特性研究The results of electromagnetism parameter analysis show that the different oxide shells have special effect to the electromagnetism parameter of the nanocompsite particles. Otherwise, the electromagnetism parameters of the nanocompsite particles decrease with increase of oxide shell.
并通过对电磁参数的分析发现不同的氧化物外壳，对纳米复合粒子的电磁性能有特殊的影响，外壳氧化物含量的增加，降低了粉体的电磁参数。
参考来源 - 功能纳米复合粉体的制备及性能·2,447,543篇论文数据，部分数据来源于NoteExpress
After control method of special electromagnetism parameter is proposed, we introduce the basis chosen of SPWM frequency conversion & IGBT power module.
接着介绍了SPWM交—直—交变频的控制方案和选用IGBT电力模块的依据。
Finally, based on above model, an example of the expert knowledge expression of efficiency object parameter in electromagnetism design of asynchronous electromotor is presented.
最后，文章给出了按上述模型建立的异步电动机电磁设计中有关效率目标参数专家决策经验的知识表示实例。
Monitor is the foundation of management, which measure the basic parameter of radio transmit. The whole electromagnetism environment was realized in the end.
频谱监测是频谱管理的基础，是测量无线电发射的基本参数，进而对整个电磁环境有整体的把握。
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