| 单词 | day drift |
| 释义 | > as lemmasday drift day drift n. Mining (now rare) a horizontal or gently inclined drift (drift n. 15) that communicates directly with the surface; cf. sense 23. ΘΚΠ society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > passage > horizontal drift1653 sump1681 heading1811 driftway1843 drive1856 day drift1859 downdrift1868 header1872 1859 Inst. Mech. Engineers: Proc. 16 The earliest and simplest plan of coal mining was that of a day drift or adit, along which both water and coals were brought. 1894 Gloss. Terms Evid. Royal Comm. Labour 35/2 in Parl. Papers 1893–4 (C. 7063–VC) XXXVIII. 411 Day drifts or Day holes, galleries or inclined planes driven from the surface so that men can walk underground to and from their work without descending and ascending a shaft. 1946 Brit. Med. Jrnl. 11 May 715/1 The mines of known risk are what are commonly called day drifts, slants, or levels, and lead direct from the surface into the mine workings. 1996 U.S. Patent 5,535,591 2 The resultant slag residue or ash and the filtrated material..of exhaust gas can stay directly underground, for instance to fill up exhausted day drifts or galleries, respectively, from where the coal is extracted. < as lemmas |
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