侵蚀面小、水平浅的患者建议使用球形电极消融术；
To the surface erosion in small, shallow level of patients, the spherical electrode ablation is recommended;
通过计算半球静电支承下球形转子与电极之间的间隙，导出了静电力与间隙的关系。
The clearance between the spherical rotor and electrodes is calculated under hemisphere electrostatic suspension and the relationship between the electrostatic force and the clearance is derived.
通过计算半球静电支承下球形转子与电极之间的间隙，导出了静电力与间隙的关系。
The clearance between the spherical rotor and electrodes is calculated under hemisphere electrostatic suspension and the relationship between the electrostatic force and the clearance is derived.
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