The couple of force created by rotor pole center suspending difference may not increase the pressure on the thrust pad.

转子磁场中心安装偏差所产生的轴向磁拉力很小，转子磁极中心挂装高程差所产生的不平衡力偶不致增大推力瓦受力。

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This paper describes the strain character of forming of thin-walled semi-spherical head. According to the deduction of the forming pressure-pad-force formulae is given.

本文从变形分析着手对压制半球形薄壁封头的成形力进行了分析，并得出了压边力的理论计算式。

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