... mechanical handling 机械装卸 mechanical hatchcover 机械舱口盖 mechanical hatchcover 机械式舱口盖 ...
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... mechanical hatchcover 机械舱口盖 mechanical hatchcover 机械式舱口盖 mechanical impedance instrumentation 机械阻抗仪表装置 ...
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... 快速关闭舱口盖 quick-acting scuttle 坏式舱口盖 mechanical hatchcover 平式舱口盖 flush hatch cover; flush hatchcover ...
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