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In this step, work to drill for the pipe of a propeller shaft or a rudder.
在这个步骤中,演练工作,为管道的传动轴或舵。
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Inspecting centerline positioning for shaft system and rudder system before boring.
轴、舵系镗孔前中心线定位检查。
The submarine has four stern rudder with a single large shaft.
潜水艇采用单轴四尾舵。
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