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单词 ratchet pinion
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ratchet pinion
ratchet pinion n.
ΚΠ
1779 Philos. Trans. 1778 (Royal Soc.) 68 979 We must..except the rochet pinions.
1849 Sci. Amer. 29 Sept. 9/3 On this circular frame is a small ratchet pinion, G, fixed on a short axis.
1920 T. W. Chalmers Paper Making & its Machinery xi. 103 Any arrangement for vibrating the strainer drum which employs a ratchet pinion and hammer..is apt to prove unpleasantly noisy when in use.
1982 Kirk-Othmer Encycl. Chem. Technol. XIX. 31 Several design configurations can be combined into one component [using powder metallurgy], such as a combination ratchet pinion or a gear with a cam surface that might otherwise be an assembly of components.
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