| 释义 |
raceway Chiefly U.S.|ˈreɪsweɪ|
[f. race n.1]
1. a. A passage or channel for water; the bed of a canal, etc. Cf. race n.1 8 c.
1828in S. Jenkins Story of Bronx (1912) ix. 199 Fourteen mill sites, each fifty by one hundred feet, were mapped out along the raceways. 1837Knickerbocker IX. 254, I was jerked out with great spite, and, with an imprecation, thrown into the raceway. 1868Rep. U.S. Commissioners Agric. (1869) 335 The sand and gravel which covers the bottom of the raceway. 1877Raymond Statist. Mines & Mining 292 From No. 1 the water is carried through a race-way into tank No. 2.
transf.1873Lowell Poems, Orient Apol. xvii, A mere Auricular canal or raceway to be fed..From their vast heads of milk-and-water-power.
b. An artificial channel of running water for the rearing of fish.
1897Man. Fish Culture (U.S. Comm. Fish & Fisheries) 74 The object of these boards is to form four avenues leading to the raceway, so that one or two pugnacious fish can not command the approach and keep back spawning fish inclined to enter. 1913W. E. Meehan Fish Culture vii. 104 There has been a tendency in recent years for fish-culturists to abandon raceways. 1953H. S. Davis Culture & Dis. Game Fish ii. 21 Raceways for holding small fingerlings are usually constructed of concrete. 1972Aquaculture I. 229 Water requirements for ‘raceway’ production of turbot would be very low compared with the requirements in current trout farming practice. 1976San Antonio (Texas) Express 23 Sept. 8-g/1 The facility includes a laboratory, office building, 20 ponds, eight concrete raceways and two wells.
2. A course or passage for a shuttle. Also, a groove in a type-setting machine along which types are moved; also, a groove in which ball-bearings run.
1875Knight Dict. Mech. 1355/2 s.v. Loom, A roller imparting a vibratory motion to the lay, in which is a raceway for the shuttle. 1898Inland Printer Nov. 178/1 This machine will select the type, place them in a raceway and move them along until a line is set up. 1946Richmond (Va.) Times-Dispatch 8 Dec. iv. 6-d/1 The balls are held in place by two concentric steel rings. They run in grooves or ‘raceways’ cut in the rings. A retainer or separator is usually inserted to keep them from rubbing against each other.
3. A metal pipe or plastic tube enclosing electrical wires; piping or tubing so used.
1897F. C. Moore How to Build iv. 58 Conduits or race⁓ways for carrying wires through the house should be of iron or other metal. 1964R. F. Ficchi Electrical Interference ix. 168 Metal boxes, cabinets and fittings, or noncurrent⁓carrying metal parts of other fixed equipment, if metallically connected to grounded cable armor or metal raceway, are considered grounded by such connections. 1976Lieberman & Rhodes Compl. CB Handbk. v. 105 Stick the snake through the ‘raceway’ (the space in which the tail-light wires run through the trunk).
4. A track or circuit on which harness races, etc., take place; a racecourse. Also attrib.
1936Sun (Baltimore) 19 Oct 12/6 Topping..had purchased the Maserati car which Philippe Etancelin, of France, drove in the Roosevelt raceway test. 1942Ibid. 24 Aug. 11/4 Saratoga Raceway's new harness racing venture. 1958Washington Post 30 Aug. a12/5 Raceway officials told the commission the plant would be ready for night racing by next March 1. 1968Globe & Mail (Toronto) 17 Feb. 43 (heading) Greenwood Raceway. Saturday, Feb. 17. 1979Beautiful Brit. Columbia Winter 33 The fans..turning to the racing form for the next race in to-night's harness racing card at Cloverdale Raceway. |