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单词 sump head
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sump head
sump head n. Mining (now chiefly historical) the uppermost part of a sump shaft.
ΚΠ
1747 W. Hooson Miners Dict. sig. T3v Spurfork, a small sort of Fork..sometimes used to hold Doorsteds in Drifts, or at Sumpheads asunder.
1887 Geol. Mag. 3rd Decade 4 407 The Workmen themselves, but more especially the Labourers, at the Sump-heads and in the Gates, have been often affrighted with such a Noise and dismal Rattle, as if sometimes the Shaft had run in.
1996 S. Murphy Grey Gold vi. 127 Thomas Jewell and his three partners cut out a sump head and sank the first part of the sump which bears his name nearly 12 fm from February to June 1873.
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更新时间:2024/12/24 7:58:11