利用旋转坐标系的方法，计算了各向异性铁磁体的磁化强度和共振频率。
The magnetization and the resonant frequency of the anisotropic ferromagnet are calculated by means of rotation of the coordinate system.
针对电机的实际工作环境，研究了不同工作状态的磁体在交变磁场作用下表面磁感应强度随时间的变化。
The operating conditions in a permanent magnet were analyzed to quantity the magnetic induction changes on the surface with an alternating magnetic field.
改变磁体的强度，看看内部和外部是怎么变化的。用测量表来测度磁场是如何变化的。
Vary the magnet's strength, and see how things change both inside and outside.
改变磁体的强度，看看内部和外部是怎么变化的。用测量表来测度磁场是如何变化的。
Vary the magnet's strength, and see how things change both inside and outside.
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