A mechanical speed regulation method is used to solve problems above, and better electric energy conservation effection is acquired.
针对以上问题，改用机械调速方式，对存在的问题进行了解决，并取得较好的节电效果。
A mechanical speed regulation method is used to solve problems above, and better electric energy conservation effection is acquired.
针对以上问题，改用机械调速方式，对存在的问题进行了解决，并取得较好的节电效果。
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