Dual Speed HUB 双速集线器
dual-speed ploughing 双速刨煤
dual speed switch 双速开关
dual-speed motor 双速电动机
dual-speed synchro system [自] [机] 双速同步系统
dual speed 双速
dual-speed fan 双速风机
dual speed control 双速控制
This paper also introduces the dual-speed control system and the realization of the function.
还详述了双调速系统，及所实现的功能。
To reduce energy consumption, the original plant circulating pump motor was changed to dual-speed motors.
为了节能降耗，将原循环水泵电机改为双速电机。
The bus Train, a dual-mode vehicle that has the versatility of a bus, the speed of light rail and fuel economy vastly better than either.
公交火车，一种双重模式的机动车，即拥有公交车的功能，也具有轻轨的速度，甚至是比两者都还节省燃油。
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