In this paper we discussed the evolution of two states system and geometric phase in a rotating magnetic field by using the method of coordinate transformation.

本文用旋转坐标系系法对二能级系统的在旋转磁场中的演化和几何相进行了研究。

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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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