Mining.(a) A nearly horizontal ‘drift’, passage, or gallery in a mine. (b) A ‘drift’; often (more fully water-level) one serving for drainage…
| 单词 | θ211921 |
| 释义 | society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > passage > horizontal > types of (10) level1721 Mining.(a) A nearly horizontal ‘drift’, passage, or gallery in a mine. (b) A ‘drift’; often (more fully water-level) one serving for drainage… roadway1832 Mining. A more or less horizontal passageway excavated in a mine; = road, n. 4c. side drift1837 a horizontal passage or tunnel leading off a main passage. narrow1850 A narrow part, place, or thing; the narrow part of something. Mining. A narrow gallery cut at right angles to a broad gallery. Cf. narrow work n.… entry1854 U.S. Mining. A horizontal passage providing access to a section of a mine. rise heading1872 A heading driven towards the rise, i.e. in the direction of the greatest uphill slope. cross-head1877 Mining. A heading running across a vein. sump drift1880 a drift (drift, n. 15) that conveys water to a sump. gopher-drift1881 (see quot.). stone-heading1892 a heading driven through stone or rock. |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。