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单词 under-dip
释义 ˈunder-dip, a. Mining.
[under-1 5 c.]
Lying below the level of the bottom of the engine-pit. Also const. of.
1839Ure Dict. Arts 975 What is not included, is termed the under-dip coal.Ibid. 994 Under-dip workings have been already executed more than an English mile under-dip of the engine-pit bottom.1886J. Barrowman Sc. Mining Terms 69 Under-dip coals.
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更新时间:2024/9/20 1:12:34