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1920年3月20日

1分鐘閱讀

駕駛員的手勢訊號，打破郵件飛機等的傳統

作者：Robert G. Skerrett

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This article was originally published with the title “Finger Signals for the Motorist, Breaking Away from the Conventional in Mail Airplanes, and more” in 大眾科學 Magazine Vol. 122 No. 12 (March 1920), p. 305
doi:10.1038/scientificamerican03201920-305

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