With the increase of the magnetic field on the cathode surface, wave amplitude and equilibrium radius of the electron beam increase;
随着阴极表面磁场的增大，电子注注腰半径增大，电子注波动增大；
With the increase of the magnetic field on the cathode surface, wave amplitude and equilibrium radius of the electron beam increase;
随着阴极表面磁场的增大，电子注注腰半径增大，电子注波动增大；
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