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烟囱顶的weathertight hinged hatch cover作什么用的?

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发表于 2007-10-19 12:07 | 显示全部楼层 |阅读模式 来自: 日本
Near the top of the funnel, there shall be provided rain protection plate and necessary openings for passage of pipes, and a small weathertight hinged hatch cover. The drain piping from the top plate shall be led inside of the funnel and directed overboard (upper deck level). -------有的船是排到机舱里面去了的吧〉?
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