英语词汇“roof stratum”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

b. Mining and Geology. In sense 4d, as roof coal, roof rock, roof stratum, etc.See also roof work n. (a) at Compounds 3.

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1653 E. Manlove Liberties & Customes Lead-mines Derby 264 Primgaps, Roof-works, Flat-works, Pipe-works, Shifts.

1684 Fawside Coal Compt 125 For ruffe coall takeing doune, £5.

1754 Zimmerman in T. G. Smollett tr. Select Ess. Commerce, Agric., Mines, Fisheries 263 It lies above the pitch-coal, and is by the miners called roof-coal.

1839 A. Ure Dict. Arts 978 The roof-stratum begins to break by the sides of the pillars.

1845 J. Phillips & C. G. B. Daubeny Geol. in Encycl. Metrop. VI. 704/1 An idea of the appearances of the Hutton roof crags.

1887 P. McNeill Blawearie 134 The day on which I got my head crushed wi' the fa' o' roof-coal.

1935 Amer. Mineralogist 20 598 The narsarsukite was seen only in the quartz veins in the roof rock and upper part of the intrusive.

1954 Sewage & Industr. Wastes 26 655/1 The most highly acid-forming seams studied have a high sulfur content in the roof strata.

2001 E. V. Stanis & B. I. Maskovtsev in R. N. Yong & H. R. Thomas Geoenvironmental Engin. 89 This was caused by a caving of the roof rocks in the air heading, from which the support had been removed.

单词	roof stratum
释义	> as lemmas roof stratum b. Mining and Geology. In sense 4d, as roof coal, roof rock, roof stratum, etc.See also roof work n. (a) at Compounds 3. ΚΠ 1653 E. Manlove Liberties & Customes Lead-mines Derby 264 Primgaps, Roof-works, Flat-works, Pipe-works, Shifts. 1684 Fawside Coal Compt 125 For ruffe coall takeing doune, £5. 1754 Zimmerman in T. G. Smollett tr. Select Ess. Commerce, Agric., Mines, Fisheries 263 It lies above the pitch-coal, and is by the miners called roof-coal. 1839 A. Ure Dict. Arts 978 The roof-stratum begins to break by the sides of the pillars. 1845 J. Phillips & C. G. B. Daubeny Geol. in Encycl. Metrop. VI. 704/1 An idea of the appearances of the Hutton roof crags. 1887 P. McNeill Blawearie 134 The day on which I got my head crushed wi' the fa' o' roof-coal. 1935 Amer. Mineralogist 20 598 The narsarsukite was seen only in the quartz veins in the roof rock and upper part of the intrusive. 1954 Sewage & Industr. Wastes 26 655/1 The most highly acid-forming seams studied have a high sulfur content in the roof strata. 2001 E. V. Stanis & B. I. Maskovtsev in R. N. Yong & H. R. Thomas Geoenvironmental Engin. 89 This was caused by a caving of the roof rocks in the air heading, from which the support had been removed. extracted from roofn. < as lemmas
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> as lemmas