时间：2011-02-23 15:18来源：蓝天飞行翻译 作者：航空 点击：次
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alternate adjective /.ltn.t/ 1. every other . A, c, e, and g are alternate letters, as are b, d, f, h, etc. . alternate days every other day . There are out-ward flights on alternate days, i.e. on Mondays, Wednesdays and Fridays. 2. US same as alternative . noun /.l tn.t/ an aerodrome of second choice to be used if the aircraft cannot be landed at the aerodrome of first choice because of bad weather, etc. . The point of no return is calculated before depar-ture to cover the chance that both the terminal airfield and its alternate become unavailable during flight. . verb /.lt.ne.t/ to happen in turns . Captain Smith and Captain Jones alternate as CFI on a daily rota each captain has one day on duty as CFI fol-lowed by a day off, on which the other captain acts as CFI alternating current /.lt.ne.t.. kr.nt/ noun an electric current which reverses its direction at regular intervals . Resistance to alternating current remains almost constant and is inde-pendent of frequency. Abbreviation AC alternative /.ltn.t.v/ adjective referring to another or a second possi-bility . A turbine bypass, in the form of an alternative exhaust duct is fitted with a valve. . an alternative means of doing something another or different way of doing something . noun another choice or possibility . In some emer-gency situations the pilot may have no alternative but to force-land the aircraft as soon as possible. alternator /.lt.ne.t./ noun a type of generator designed to produce AC power altimeter /lt.mit./ noun a radio instrument for measuring vertical dis-tance or altitude . altimeter check a routine check to ensure that the altime-ter pressure setting is correct . altime-ter display the display of altitude infor-mation, which can be given in analogue or digital form. . pointer altitude /lt.tjud/ noun the vertical distance between an aircraft, or a point or a level, and mean sea-level . to lose altitude to descend from higher to lower altitude . cabin altitude the arti-ficial altitude created in the cabin by pressurisation alto-/lt.υ/ prefix at a moderate or high altitude altocumulus /lt.υkjumjυl.s/ noun small white cumulus clouds which form as a layer at moderate alti-tude, usually meaning fair weather. Compare stratocumulus altostratus /lt.υstrɑt.s/ noun a uniform layer cloud at moderate alti-tude aluminium /l.m.ni.m/ noun a strong, light metal used in the construc-tion of aircraft (NOTE: The US English is aluminum.) COMMENT: In recent years, aluminium has been increasingly replaced by the use of composite materials in the construction of different types of aircraft, from small home-built light aircraft to transport aircraft such as the Airbus A320. aluminum /.lum.n.m/ noun US same as aluminium AMA abbreviation approach monitor-ing aid amber /mb./ adjective an orange or yellow colour . An amber light flashes on the instrument panel. (NOTE: Amber |
