So the saturated steady operation mathematical model of pulsating magnetic field PM low speed synchronous motor is constructed under phase coordinate system.

脉振磁场永磁低速同步电动机是一种新结构原理的永磁同步电动机。

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In order to satisfy the requirement for the route location of the Shanghai-Hangzhou magnetic suspension project, a new form of geodetic coordinate system was proposed.

为更好地满足沪杭磁悬浮工程全线施工定线的需要，提出了引用一种新型大地坐标系的设想。

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In allusion to these problems, a plasma sheath model in an oblique magnetic field, which has one dimension coordinate space and three dimensions speed space, has been build.

针对以上问题，我们建立一个一维坐标空间三维速度空间的斜磁场作用下的等离子体鞘层物理模型。

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