This paper introduces mainly the construction features of REPM DC servomotors with air-core rotors and their manufacturing technology. Meanwhile, it states their application feild.

介绍了稀土永磁空心杯转子直流伺服电动机的结构特点，空心杯电枢的绕制方法及其制造工艺，同时还介绍了这种电机的主要用途及其优点。

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Robert Feild, of Harvard, praised him for undermining the outworn distinction between high art and popular culture.

ECONOMIST: America��s sorcerer

Cast: Keri Russell, JJ Feild, Bret McKenzie, Jennifer Coolidge, Georgia King, James Callis.

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