Electromagnetic heat is generated from the coils that are transmitted with high frequency electric currents , when magnetic metal cookware is used , high magnetic frequencies are generated , thereby creating huge volumes of whirling fluids , which is transformed from electric power into heat power 电磁炉具热源的产生是利用高频电流通过一组线圈，形成高频交变磁场，磁场的磁力线穿过铁磁材料的金属锅，作用于锅体内的粒子，使其剧烈运动、磨擦，即时产生极高的温度场，将电能转化成热能。
When the stress at the tip of crack is inflicted on the m - type ferrite particle dispersed in matrix as a second particle , not only the toughness of composites will be pro ved because of the non - elastic area produced by the particle but also the strength change of magnetic field and the stress distribution in the structural ceramics will be detected by the strength of spontaneous magnetization varying while magnetic materials being pressed or drawn 这是因为当结构陶瓷中裂纹尖端的应力作用在弥散于基体内的铁磁体二相粒子上时，铁磁粒子不仅在裂纹尖端周围产生的非弹性区域使复合材料的韧性提高；而且还能利用铁磁材料在外应力作用下自发磁化强度发生变化的性质，通过测量复合材料在应力作用下磁场强度的变化，探测出结构陶瓷中的应力分布情况。
The power angle characteristics are acquired and compared with the unsaturated curves . it is concluded that the stability limit of the power angle is less than 90 degree . reactive power regulating curves are calculated and compared with those curves when saturation effect is not considered , the result is that u type curves are deviated to the right 通过对同步发电机各种运行曲线的计算，在已有文献的基础上更进一步分析了铁磁材料饱和以及磁场畸变对同步发电机运行特性和参数的影响；求出了空载特性曲线和零功率负载特性曲线，在不同的电枢电流下计算得到的波梯电抗不同；求出了功角特性曲线，与不计饱和时的功角特性曲线相比较，功角稳定极限小于90 ；求出无功调节曲线，与不计饱和时相比较， u型曲线向右偏移。
For example , when magnetic material being pressed , magnetic domain , direction and strength of spontaneous magnetization will vary . this phenomenon is called effect of pressing magnet . whichever rearrangement of magnetic domain or direction change of spontaneous magnetization will induces extra shape change of material 如对铁磁材料施加应力时，往往会导致磁畴、自发磁化方向和强度发生变化，这一现象称之为压磁效应，由于得益于压磁效应的作用，不论是磁畴重新排列还是自发磁化方向发生变化都会引起材料额外的形变，因此在一定应力的作用下铁磁材料能产生非弹性变形。
