| 单词 | narrow work |
| 释义 | > as lemmasnarrow work narrow work n. Mining a narrow gallery driven into a seam, vein, etc.; a system of mining that makes use of such passages; cf. sense B. 2f. ΚΠ 1849 G. C. Greenwell Gloss. Terms Coal Trade Northumberland & Durham 37 Narrow Work, excavations, 3 yards in width and under. 1874 J. H. Collins Princ. Metal Mining (1875) viii. 52 In deeper workings it is desirable..to lessen the proportions of ‘narrow work’, as the headings are called. 1967 Gloss. Mining Terms (B.S.I.) viii Narrow work, driving roadways or rooms in coal. < as lemmas |
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