为了解决磁共振成像系统中双调谐射频线圈的设计问题，提出了一个通用等效电路模型。
A generalized equivalent circuit model was developed for both single-tuned and double-tuned radio-frequency(RF) coils for Magnetic Resonance Imaging (MRI) systems.
用该方法进行选线不受故障瞬间电压相角以及消弧线圈的影响，通用性强，而且对干扰的容忍能力也有提高。
This method is not only immune from the moment when a fault occurs and the condition whether a Peterson coil exists or not, but also more bearable to interference.
定子、转子线圈、铁心通用3000B，主要装用在改进型东风5机车上，和东风7G机车上。
Stator, rotor coil, core are the same as 3000B, mainly equipped with the modified locomotive DF 5, and DF 7G.
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