| 单词 | thin seam |
| 释义 | > as lemmasthin seam thin seam n. (also attributive), see quots. ΘΚΠ the world > the earth > minerals > mineral deposits > [noun] > stratum or bed > of coal > type of coal seam foot coal1665 foot-rid1665 top coal1803 ten-yard coal1839 rider1840 ten-foot coal1855 top-hard1855 yard-coal1855 yard-seam1862 guide seam1867 main1867 bank1881 rearer1883 thick coal1883 thick seam1883 thin seam1883 1883 W. S. Gresley Gloss. Terms Coal Mining Thin Seams,..coal seams (say) less than 3 feet in thickness. 1887 Pall Mall Gaz. 5 Sept. 12/1 The coal-mining industry in the thin-seam districts. < as lemmas |
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