| 单词 | main coal |
| 释义 | > as lemmasmain coal main coal n. [compare main n.1 9] Coal Mining (a) a main or principal seam of coal; (b) coal extracted from a main seam, of recognized good quality. ΘΚΠ the world > the earth > minerals > mineral deposits > [noun] > stratum or bed > of coal coal bed1591 roach1653 coal measure1665 coal vein1665 main coal1708 coal seam1756 the world > the earth > minerals > types of mineral > hydrocarbon minerals > [noun] > coal coal1253 main coal1708 black diamond1803 1708 J. C. Compl. Collier 11 in T. Nourse Mistery of Husbandry Discover'd (ed. 3) Having happily Coaled this Noble Main-Coal. My Business of a Sinker is at an end. 1789 J. Brand Hist. & Antiq. Newcastle II. 263 Coal owners had not yet discovered ( a.d. 1512) or found means to win the deep strata of this fossil, or what is styled in the language of the trade, ‘the main coal’. 1845 New Statist. Acct. Scotl. V. 445 Main Coal, This is composed of two bands, divided by a stone from 10 inches to 2 feet thick. It is cubical, of good quality, and suitable for shipping. 1969 G. M. Bennison & A. E. Wright Geol. Hist. Brit. Isles ix. 226 Common names [for coal seams] such as the Main Coal and the Cannel Coal have led to confusion in correlation. 1980 Gloss. Mining Terms in Fife Main coal. 1. The best quality coal. 2. The principal coal seam. < as lemmas |
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