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单词 bott stick
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bott stick
bott stick n. Founding a rod with an expanded end to which a detachable conical plug of refractory clay is affixed, used for closing a tap hole in a foundry; see sense 2.
ΚΠ
1863Bott stick [see sense 2].
1900 J. Sharp Mod. Foundry Pract. 144 A round ball of this [loam] is placed on a disc of iron at the end of an iron rod, and is forced into the tap-hole..when it is wished to stop a tapping out with the bott or bod stick.
1986 Foseco Foundryman's Handbk. (ed. 9) 61 The bott stick should have a convex surface as shown. This is found to provide a more secure adhesion of the clay bott than a flat metal face.
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更新时间:2025/1/3 23:37:12