文本详细分析了电动机的软启动、平缓启动和直接启动等启动方式，阐述了采取什么样的启动方式才能真正起到节能的效果。
The paper analyzes several start ways of motor, such as soft start, gentle start and direct start, and expounds which way is really good for energy saving.
压紧辊启动由电动机直接驱动，并且具有跟踪再启动功能。
Pressing roll driven by motor directly, it with tracking and then start.
压紧辊启动由电动机直接驱动，并且具有跟踪再启动功能。
Pressing roll driven by motor directly, it with tracking and then start.
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