... engine room skylight 机舱天窗 engine room tank 机舱油柜 engine room top plate 机舱顶板 ...
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engine room annunciator sump tank 发动机油底壳
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Additional, in "MARPOL Reg 12a" the demand of Double Hull Protection for fuel oil tank, increases the difficulty of structure design for engine room.
加之MARPOL 12 A条款要求对燃油舱设置双壳保护，给机舱的结构设计增加了难度。
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