| 单词 | centre of conversion |
| 释义 | > as lemmascentre of conversion ΚΠ 1728 E. Chambers Cycl. Centre of Conversion, in Mechanicks, a Term first us'd by M. Parent. 1742 J. Martyn & E. Chambers tr. Philos. Hist. & Mem. Royal Acad. Sci. Paris I. 191 The stick will be found to turn upon one of its points which will be immoveable, which M. Parent calls the centre of conversion. < as lemmas |
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