| 单词 | offtake drift |
| 释义 | > as lemmasofftake drift 1. A channel, pipe, etc., by which fluid is removed; (Mining) a drift (drift n. 15) for discharging water (more fully offtake drift). ΘΚΠ society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > other places in mine work1474 firework1606 stemple1653 stool1653 bink1675 engine pit1687 swamp1691 feeder1702 wall1728 bag1742 sill1747 stope1747 rose cistern1778 striking-house1824 plat1828 stemplar1828 screen chamber1829 offtake1835 footwall1837 triple pit1839 stamp1849 paddock1852 working floor1858 pit house1866 ground-sluice1869 screen tower1871 planilla1877 undercurrent1877 mill1878 blanket-sluice1881 stringing-deal1881 wagon-breast1881 brushing-bed1883 poppet-leg1890 slippet1898 stable1906 overcut1940 the world > the earth > water > rivers and streams > action of river > [noun] > flowing of branch from main channel offtake1888 1835 J. Holland Hist. & Descr. Fossil Fuel, Collieries, & Coal Trade 187 3000 gallons of water per minute,—for the raising of which into an off-take drift, a double-acting steam-engine..was found necessary. 1875 R. Hunt & F. W. Rudler Ure's Dict. Arts (ed. 7) III. 320 There are subsidiary levels, called off-takes or drifts, which discharge the water of a mine, not at the mouth of a pit, but..where, from the form of the country, it may be run off level free. 1888 19th Cent. Jan. 44 The third of the Hugli headwaters has its principal offtake from the Ganges again about forty miles further down. 1963 Gloss. Mining Terms (B.S.I.) iv. 8 Delivery drift, (off-take drift), a..drift connected to a shaft from a point on the surface at a lower level than the shaft top and used as an outlet into which the mine pumps discharge. 1992 D. M. Muir Dust & Fume Control (rev. ed.) v. 19 The purpose of the slot is purely to provide sufficient pressure drop to prevent all the air being induced from that section of the hood nearest the suction off-take. < as lemmas |
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