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. |