double speed短语⁸⁴³²⁰⁺⁸ 基本例句 双速 Day and night at double speed, and finally finished this time for a thick Dream. 日夜兼程，终于赶完了这本厚厚的红楼梦。 dota123 Simplex winding double speed asynchronous motor is easiest and widest pole changing control method among the change pole motors. 异步电动机的数学模型、基本方程和矢量异步电机的矢量控制原理。 iciba