普pu通tong鼠shu籠long式shi異yi步bu電dian動dong機ji的de起qi動dong轉zhuan矩ju與yu電dian壓ya的de平ping方fang成cheng正zheng比bi,而er繞rao線xian式shi轉zhuan子zi異yi步bu電dian動dong機ji串chuan電dian阻zu啟qi動dong,電dian阻zu值zhi在zai不bu大da於yu一yi定ding值zhi時shi,轉zhuan矩ju不bu降jiang反fan升sheng,正zheng是shi這zhe樣yang的de機ji械xie特te性xing,而er用yong於yu橋qiao式shi起qi重zhong機ji這zhe樣yang需xu要yao大da起qi動dong轉zhuan矩ju的de場chang合he,而er繞rao線xian式shi轉zhuan子zi異yi步bu電dian動dong機ji的de機ji械xie特te性xing曲qu線xian可ke查zha相xiang關guan書shu籍ji。