The radial magnetic force is the primary source of vibration and noise in doubly-salient motor.

双凸极电机的径向磁吸力是电机产生振动与噪声的主要来源。

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The effects of swirl number of primary swirler and radial swirler, area ratio and sleeve divergence angle on the cold flow field of double swirl air intake were investigated.

试验研究了主、径向涡流器旋流数、面积比、套筒扩张角等参数对双旋流进气装置冷态流场的影响。

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This method can detect not only faults in primary substation, but also fault area in radial line between the primary substation and the secondary one (or switching station).

该方法不仅能够确定一级变电站的故障线路，而且能够在一级变电站与二级变电站(或开闭站)之间的辐射状线路上确定故障区域。

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