其屏蔽盒应用主气隙，防止原电流产生的磁场集中在屏蔽壳的金属板内。
Its shielded box should be used the main air gap and prevent the primary current to produce the magnetic field concentrating in the shield shell metal plate.
利用定子与转子间气隙旋转磁场与转子绕组中感应电流相互作用的一种交流发电机。
Using stator and in intertrochanteric air gap rotary field and rotor winding induced current interaction one kind of alternator.
永磁体产生的磁场是气隙磁场的主要部分，另一部分是由辅助励磁绕组的电流来激励产生，起调节磁场的作用。
The flux due to permanent magnet is the main part of gap flux, the rest flux is produced by the winding coil, which play a part of regulation.
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