The magnetization and the resonant frequency of the anisotropic ferromagnet are calculated by means of rotation of the coordinate system.
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。
Explains the application of workpiece coordinate system rotation in machine hole on the cone surface by machining a practicable manufactured product.
通过实例说明在数控加工中，通过工件坐标系旋转加工圆锥面上孔的方法。
According to the definitions of grads, divergence and rotation, the expression in spherical coordinate system is given from the point of physics.
据梯度、散度、旋度的定义，用物理的方法给出了在球坐标系中的表达式；此方法也可以推广到其它的正交曲面坐标系中。
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