本设计只采用一个液压缸，其他立柱通过钢丝绳连接以实现同步举升。
This design only USES one hydraulic cylinder, other columns realize synchronization through the cable.
螺旋桨通过使用船厂提供的液压顶升装置压入螺旋桨轴并采用湿式无键固定法紧固。
The propeller is to be force fitted to the propeller shaft by using the hydraulic jack which the Builder possess and secured by wet type keyless fitting method.
升隆部件（滑枕）采用双液压缸平衡，保证升降运动的稳定。
Double-hydraulic balance is used in up-down parts(ram)to guarantee its stable and reliable movement.
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