| 单词 | centre pinion |
| 释义 | > as lemmascentre pinion centre pinion n. [pinion n.4 a] ΚΠ 1767 J. Harrison Princ. Time-keeper 29 Fig. 14..c the Centre-pinion. 1881 F. J. Britten Watch & Clockmakers' Handbk. (ed. 4) 144 The centre pinion and great wheel need not be considered in connection with the rest of the train. 2011 G. Daniels Watchmaking (rev. ed.) v. 114 Since the centre pinion turns once per hour it will turn twenty-four times in a day. < as lemmas |
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