| 单词 | hearth ends |
| 释义 | > as lemmashearth ends hearth ends n. Metallurgy (now rare) particles of unreduced ore and other materials from a blast furnace. ΚΠ 1838 Trans. Nat. Hist. Soc. Northumberland 2 157 The top of the hearth is finished level with masonry, to receive any particles of ore, called hearth ends, that may be expelled by the blast. 1870 J. Percy Metall. Lead 289 The hearth-ends..consist of particles of ore, projected from the hearth partly by the action of the blast, but chiefly by decrepitation of the ore, and of particles of fuel and lime. 1891 E. Thorpe Dict. Appl. Chem. II. 426/2 Behind the hearth is a blind flue or pit into which ‘hearth-ends’ and other matter coming off with the fume may fall and collect. < as lemmas |
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