| 摘要 |
A brushless d.c. motor having a number of permanent magnetic pole pairs and a number of salient poles wherein the ratio between the number of permanent magnetic pole pairs and the number of salient poles is greater than unity but less than 2:1 and the ratio between the widths of the salient poles and the widths of the permanent magnetic pole pairs is greater than 0.2 but not greater than 1.2.
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