放下右/左舷硬梯，固定好扶手栏杆和舷梯下的安全网。
Lower the starboard / port gangway, secure guardrail and fix the safety net under the gangway.
一种滚轮，主要是由一阶梯状轮轴、一滚轮、一轮盖及一惯用固定片所组成，并配合一垫盖以供装设于箱体；
The utility model relates to a roller design, which is mainly characterized in that a staircase-shaped wheel axle penetrates into a roller shaft hole;
一种滚轮，主要是由一阶梯状轮轴、一滚轮、一轮盖及一惯用固定片所组成，并配合一垫盖以供装设于箱体；
The utility model relates to a roller design, which is mainly characterized in that a staircase-shaped wheel axle penetrates into a roller shaft hole;
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