主桅杆顶向下看去，在主桅杆桅楼，你可以看到穿过水手孔，和死眼。
Main mast top Looking down on the main mast top, you can see through the lubber hole, and the dead-eyes.
找出减速顶“死顶”形成的原因及制定应对措施，对调车工作安全具有重要意义。
It has importance to find the cause of "DE AD" retarder formed and make responding measure for the safety of shunting.
找出减速顶“死顶”形成的原因及制定应对措施，对调车工作安全具有重要意义。
It has importance to find the cause of "DE AD" retarder formed and make responding measure for the safety of shunting.
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