| 单词 | ratchet bar |
| 释义 | > as lemmasratchet bar ratchet bar n. ΚΠ a1824 A. Scott in Trans. Highl. Soc. (1824) 6 34 So hinged that its lower end shall fall into the teeth of the same ratchet-bar. 1889 Science 31 May 411/2 The armatures of the brake-magnets are provided with a ratchet bar and pawl. 1970 Biol. Bull. 139 119 The fish was slowly lowered into the liquid by cranking down the ratchet bar supporting the platform. < as lemmas |
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