单词 | pivot-gearing |
释义 | > as lemmaspivot-gearing ΚΠ 1867 Sci. Amer. 28 Dec. 404/2 Pivot Gearing... I claim the circular bed, A, in combination with the pinion plate, B, and coupling plate, C. 1890 Cent. Dict. Pivot-gearing. < as lemmas |
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