1917年12月29日

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来自尼亚加拉河新增两百万马力，参议院战争内幕披露，及更多

作者：Robert G. Skerrett

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大众科学 Magazine Vol 117 Issue 26This article was originally published with the title “Two Million More Horse Power from the Niagara River, The Senate War Disclosures, and more” in 大众科学 Magazine Vol. 117 No. 26 (), p. 489
doi:10.1038/scientificamerican12291917-489
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