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1920年7月24日

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更好的钢锭，减少浪费，化学战勤务学校

作者：A. R. Surface

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This article was originally published with the title “Better Steel Ingots with Less Waste, Chemical Warfare Service School” in 大众科学 Magazine Vol. 123 No. 4 (July 1920), p. 83
doi:10.1038/scientificamerican07241920-83a

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