| 单词 | pinion jack |
| 释义 | > as lemmaspinion jack ΚΠ 1854 C. W. Richmond Let. 17 July in Richmond-Atkinson Papers (1960) I. 150 Broadmore says a screw jack is no use with logs. If a rack and pinion jack can be procured that is the right thing.] a1884 E. H. Knight Pract. Dict. Mech. Suppl. 682/1 Pinion Jack (Milling), a jack for raising the stone pinion out of gear. < as lemmas |
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