Because the length of the power coil designed is longer than that of the GMM pole, magnetic symmetry is kept well and a higher intensity of magnetic field is obtained under the same current.

设计的线圈长度大于驱动棒长度，不仅保证了驱动棒所处磁场的均匀性，而且在获得相同强度的磁场时减小了稳定工作时的电流。

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A ferrous metal pole wheel passing the sensor face changes the magnetic field strength, resulting in an ac voltage being induced in the coil.

当一个铁磁性极轮通过传感器头部的感应磁场时，就会在电感线圈内产生一个交流电压。

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This paper carries on the three-dimensional static electromagnetic field analysis on the electron beam scanning deflection coil with multi pole shoe structure.

根据不锈钢毛细管板结构的钎焊特点，建立了扫描电子束钎焊温度场三维有限元分析模型。

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