在电机设计时，使用有限元方法对一种大力矩磁力齿轮——磁场调制式磁力齿轮进行了磁场计算，为设计该磁力齿轮提供了有力的工具。
This paper deals with a field modulated magnetic gear and its calculation with the finite element method, and provides a powerful numerical technique for designing magnetic gears.
磁力起子是一项对常用工具――起子加以改进以使其更便于使用的发明；
The utility model discloses a magnetic screwdriver which is an invention which is the improvement for a common tool-a screwdriver and makes the screwdriver more conveniently for being used.
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