In rotating machines, the cause of the electromagnetic torque is the electromagnetic force acting on differential volume of the ferromagnetic material in magnetic field.
旋转电机中电磁转矩的产生，可以从作用在磁场内磁性物质单位体积上的电磁力出发加以说明。
In rotating machines, the cause of the electromagnetic torque is the electromagnetic force acting on differential volume of the ferromagnetic material in magnetic field.
旋转电机中电磁转矩的产生，可以从作用在磁场内磁性物质单位体积上的电磁力出发加以说明。
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