1903年12月19日

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新跨大西洋班轮“波罗的海”号的下水。

作者：哈罗德·J·谢普斯通

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大众科学 Magazine Vol 89 Issue 25This article was originally published with the title “The Launch of the New Transatlantic Liner Baltic.” in 大众科学 Magazine Vol. 89 No. 25 (), p. 460
doi:10.1038/scientificamerican12191903-460
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