二导杆，系以其两端分别插接于各承座及固定孔内；
Two ends of two guide rods are respectively inserted in the fixing holes of the supporting seats.
修船中常会遇到铜质舵承出现松动，舵承座孔被腐蚀的情况。
Coppery rudder bush loosen and corrosion of rudder bracket are found frequently when vessel is in repair.
光检测模组整合于承座上并且对应于滑动棒具有定位凹槽的 侧面。
The light detection module group is integrated on the bearing seat, and corresponds to the side surface of the sliding rod with the locating grooves.
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