shaded-pole motor英 [ˈʃeɪdɪd pəʊl ˈməʊtə(r)]美 [ˈʃeɪdɪd poʊl ˈmoʊtər]网络 蔽极式电动机; 罩极电机电力双语例句A Mathematical Model of Shaded-pole Motor Based on Cross Field罩极电机交叉场数学模型