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单词 locking stone
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> as lemmas

locking stone
locking stone n. (a) Clockmaking and Watchmaking a locking pallet in the form of a ruby or other jewel; (b) = keystone n.1 1a.
ΚΠ
1866 Horol. Jrnl. June 113/1 This has been done by taking the same lever and pallet-piece, merely having little larger holes, to fix ruby-pins into, in the shape of the locking stone in the detent spring of a chronometer.
1911 Proc. Brit. Acad. 1909–10 144 Hegel has compared the man of genius in his relation to his age to one who places the last and locking-stone in an arch.
1998 E. Best Crit. & Exegetic Comm. Ephesians 284 The evidence only suggests a stone in the upper part of a building, not a locking stone.
2011 G. Daniels Watchmaking (rev. ed.) vii. 190 Make an octagonal pin as described for the detent locking stone.
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更新时间:2025/2/24 2:19:40