以日本神钢电机公司制造的PM型（永久磁铁型）SLPMU-025A为样机，利用等效电路法对其效率特性进行了解析计算。

Taking PM type(the permanent magnet model) SLPMU -025A motor as an example , this paper makes analytical calculation of its efficiency characteristics by the means of equivalent circuit.

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如果你用一块具有较强磁力的颚型磁铁，然后把液氧倒在颚型磁铁的中间，氧气会停在颚型磁铁中。

If you take the jaws of a powerful magnet and pour liquid oxygen in between the jaws, the oxygen will stop and will sit in the jaws.

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发电机：这台90吨重的发电机，通过旋转产生电流的环型磁铁直径近20英尺。

Generator: The 90-ton generator consists of a nearly 20-foot ring of magnets that spins to produce current.

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And, in fact, if you take the jaws of a powerful magnet and pour liquid oxygen in between the jaws, the oxygen will stop and will sit in the jaws.

实际上，如果你用一块,具有较强磁力的颚型磁铁,然后把液氧倒在颚型磁铁的中间，氧气会停在颚型磁铁中。

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