In the past, the main disadvantage of asynchronous induction motors was the difficulty of varying their speed.
过去，异步感应电动机的主要缺陷是难于变速。
The three-phase asynchronous induction motor models in EMTDC are deduced and the solution algorithms of induction motor transient process are introduced.
推导了电力系统电磁暂态仿真软件EMTDC中的三相异步电动机模型，介绍了电动机暂态过程的求解算法。
YLT series three phase asynchronous induction motors are specially designed for the cooling tower, which is with low noise, also are suitable for the low noise air blower.
YLT系列三相异步电动机是我公司专为冷却塔设计的低噪声三相异步电动机，也可适用于低噪声风机上。
YLT series three phase asynchronous induction motors are specially designed for the cooling tower, which is with low noise, also are suitable for the low noise air blower.
YLT系列三相异步电动机是我公司专为冷却塔设计的低噪声三相异步电动机，也可适用于低噪声风机上。
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