求翻译：三相异步电动机由于其结构简单、体积小、运行可靠、效率较高、价格低廉等优点而广泛应用于工农业生产，交通运输，船舶及海洋石油平台等领域。而在电动机的运行过程中，对连接设备及电机使用寿命影响最大的是电动机的起动和制动。因此对三相异步电动机起动和制动的控制及保护是节约能源，简化控制，优化资源的重要手段。异步电动机的起动是指电动机从静止状态加速到额定转速的整个过程，在起动过程中起动电流倍数和起动转矩倍数是电动机起动性能的两个重要指标。如何降低起动电流的同时增加起动转矩，改善电动机的起动性能，是广大厂家和机电领域科研工作者的重要课题。是什么意思？

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3-phase asynchronous motors because of its simple structure, small volume, reliable operation, high efficiency, low prices and wide range of applications such as industrial and agricultural production, transportation, shipping and offshore oil platforms, and other areas. In the motor running, the mo

But the three-phase asynchronous motor as a result of its structure simple, the volume small, the movement reliable, the efficiency is high, the price inexpensive and so on the merits widely applies in the industry and agriculture production, the transportation, domains and so on ships and sea petro

Three-phase asynchronous Motors due to their simple structure, small size, reliable operation, high efficiency, low cost and other advantages which are widely used in industrial and agricultural production, transport, shipping and offshore oil platforms, and other areas. While the motor is running,

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