• 1. jack-up system: 升降系统
• 2. sync jack-up system: 同步顶升系统

• 1.This paper introduces the energy saving, maintenance and the methods of processing problems of cutting machine and the transformation to the jack-up system.
  介绍了板坯连铸切割机节能降耗、维护、维修办法，以及切割机升降系统的改造。
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• 2.Jack Wallen explains the first steps he takes to perk up a sluggish system.
  杰克·沃伦(Jack Wallen)解释了自己让迟滞的系统重新抖擞的首要步骤。
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• 3.The skid jack system USES eight jacks (two on each corner), all of which help to lift up the load, allowing it to be slid with relative ease.
  The防滑千斤顶系统的数百英尺海上失踪使用8插孔(每个角落2)，所有这些都有助于解除了负载，允许它与相对容易下滑。
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