... 快速锅炉 express boiler 快速开闭舱盖 quick acting hatch cover 快速冷冻 quick freezing ...
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... 快连启闭舱盖 quick acting hatch cover 紧急速闭阀 quick closing emergency valve 缀合铆钉 quilt rivet; tack rivet ...
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Quick acting watertight hatch cover 快速启闭水密舱口盖
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