您要查找的是不是：
- Hydraulic efficiency folding hatch cover 液压折叠式舱口盖
- folding hatch cover 折叠式舱口盖
- The hatch cover slid off the boat and into the sea. 舱盖从船上滑入海里。
- Rubber packing using for marine hatch cover. 船舶用舱口盖密封橡胶条。
- Opening and closing test for cargo hatch cover. 货舱舱口盖启闭试验。
- How can you lift the hatch cover? 怎样打开舱口盖?
- How is the hatch cover kept watertight? 怎样保证舱口盖水密？
- Inspection welding seam and dimension of cargo hatch cover. 货舱舱口盖焊缝和尺度检查。
- The hatch cover slid off the boat and into the drink. 舱盖从船上滑入海里
- To be positioned and handled by hatch cover gantry crane. 用舱口龙门吊来吊放它们。
- I mean I want to talk with you about the hatch cover. 我的意思是我想和您谈一谈舱口盖的问题。
- Hydraulicefficiency folding tweendeck hatch cover 液压折叠式二层甲板舱口盖
- The hatch covers of all empty tanks were screwed down. 所有空坦克的天窗盖都已用螺丝钉钉住。
- A rear hatch cover had broken loose and water was flooding into the aft section. 后舱盖松裂，海水正涌进艇尾部。
- Tightness test(opening and closing test, emergency opening and closing test)for cargo hatch cover. 货舱舱口盖密性试验(启闭试验、应急启闭试验)。
- Tightness test(opening and closing test,emergency opening and closing test)for cargo hatch cover. 货舱舱口盖密性试验（启闭试验、应急启闭试验）。
- He silently closed the hatch cover and stood erect, breathing the cool, still air and surveying the deck. 他轻轻关上舱盖，站直身子环视了一下甲板，而后深深吸了几口冷冽的空气。
- Just at that time, Lieut.Howell found a wooden staircase, which led to the hatch cover, then successfully opened it. 运输船随即派出救生艇，带走大部分卫兵和船员，留下六七个卫兵在甲板上监视战俘，而不管战俘们死活。
- PAY MORE ATTENTION TO CARE AND MAINTENANCE OF HATCH COVERS OF SHIPS? 关于加强货舱舱口盖维护保养的通告?
- Seals should be in place on all top hatch covers and bottom outlet valves. 在顶部的开口处与底部的出口处应有密封条?
