... 水密舱壁 watertight bulkhead 水密舱口 water tight hatch 水密舱区 watertight compartment ...
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water tight hatch cover 水密舱口盖
semi flush water tight hatch 半平水密舱盖
raised water-tight hatch 升高水密舱口
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Flexibility and hosing test for small water tight hatch cover(water tight door and window).
水密小舱口盖（水密门、窗）启闭灵活性、冲水检查。
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Flexibility and hosing test for small watertight hatch cover (water tight door and window).
水密小舱口盖(水密门、窗)启闭灵活性、冲水检查。
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