控制单元设有预设的举升高度，左柱上安装有自动挡块。
Control unit with preset lifting height and automatic stop fitted at the left pillar.
从工程学角度考虑，涡轮必须安装在垂直的柱上，即便在有坡度的地形也不例外。
For engineering reasons turbines must be mounted on vertical poles, regardless of the slope of the landscape.
只有在每柱每相上安装过电压保护器才能得到好的保护效果。
Only in each column over-voltage protector installed on each phase can get good protection effect.
不对称尾鳍是安装在单桨船螺旋桨前方艉柱上的一种节能装置。
The asymmetrical skeg is an energy-saving unit which is fixed on the sternpost forward of the propeller on a single screw ship.
断路器的每相极柱分别安装在基架11上，每个基架旁边都有一个操作机构箱15.1。
The pole columns of the circuit-breaker are each mounted on a base 11, to the side of each of which an operating mechanism cubicle 15.1 is fitted.
断路器的每相极柱分别安装在基架11上，每个基架旁边都有一个操作机构箱15.1。
The pole columns of the circuit-breaker are each mounted on a base 11, to the side of each of which an operating mechanism cubicle 15.1 is fitted.
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