| 单词 | ratch tooth |
| 释义 | > as lemmasratch tooth ΚΠ 1767 J. Ferguson Lect. Suppl. 5 Whilst the weight is drawing up, the ratch-teeth of a wheel slip round below a catch or click that falls successively into them. 1876 Chem. News 14 Jan. 21/1 There are holders called ratch tooth holders (by the teeth taking the form of ratch teeth). < as lemmas |
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