| 单词 | ratchet arbor |
| 释义 | > as lemmasratchet arbor ratchet arbor n. ΚΠ 1832 T. Reid Treat. Clock & Watch Making iii. 45 This..takes away from the good effect, which the rack would otherwise have did it operate solely with the pinion on the ratchet arbor. 1849 H. M. Noad Lect. Electr. (ed. 3) viii. 383 A pinion on the ratchet-arbor gives motion to other simple wheel-work which carries the minute and hour hands. 1977 N.Y. Times 25 Sept. 32/3 Misc. Mach & Equip... 12 ton ratchet arbor press. < as lemmas |
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