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

单词	longwall
释义	WordReference Random House Unabridged Dictionary of American English © 2024 long•wall (lông′wôl′, long′-),USA pronunciation adj. [Mining.] Miningnoting or pertaining to a means of extracting coal or other minerals in an underground mine from a continuous face, the roof before the face being supported at intervals by temporary or movable artificial supports. Cf. room-and-pillar. n. Miningthe continuous face so worked. long¹ + wall 1830–40
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