give or provide as part of the whole .
Exhaust gases contribute to engine power. . although the weather was bad, pilot error contributed to the accident pilot error was partly respon-sible for the accident
contribution /k.ntr.bju.(.)n/ noun 1. the part that something plays in making or causing something . The dif-ferences in the effect of solar radiation on land and sea make the biggest con-tribution to weather and climate. 2. the act of contributing or something, espe-cially money, that is given or provided
contributor /k.ntr.bjυt./ noun a
person or thing that contributes to something . There are other factors which cause the division of the lower atmosphere into two layers but the ozone effect is a major contributor.
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control /k.ntr.υl/ noun 1. the control tower /k.ntr.υl taυ./
authority or ability to direct somebody or something 2. . crowd control the management of the movements of large numbers of people 3. checking or exam-ining . verb to direct, to manage or to make a machine, system, procedure, etc., work in the correct way . The pur-pose of the centrifugal switch is to con-trol the starting and ignition circuits.
(NOTE: The word control in English is used in a different way to similar words in other languages. In English, the verb check is more often used to mean ‘look at and verify’ while control is used in the sense of ‘to make something work in a particular way’: the yoke and rud-der pedals are used to control the movement of the aircraft. Note also: controlling – controlled.)
control area /k.ntr.υl e.ri./ noun
the airspace above a particular area on the ground, which is controlled by a particular authority. Abbreviation CTA
control column /k.ntr.υl k.l.m/
noun the main hand control used by the pilot to control the aircraft in roll and pitch
controlled airspace /k.ntr.υld
e.spe.s/ noun airspace which is gov-erned by rules and regulations which pilots must comply with. Abbreviation
CAS
controller /k.ntr.υl./ noun 1. a
device which ensures that something operates in the correct way . the propel-ler speed controller 2. a person who manages systems to ensure the smooth operation of procedures
controls /k.ntr.υlz/ plural noun
manual or automatic devices that are used to control a machine, a system, etc., or to make a machine, a system, etc., work in a correct way . the pilot at the controls of the aircraft the pilot who is operating the flying controls
control surfaces /k.ntr.υl sf.s.z/ plural noun moveable aero-foils, usually on the wings and tail-plane, which can be operated from the cockpit by the pilot, thus changing air-craft attitude
noun a tall building on an airfield from which air-traffic controllers organise incoming and outgoing aircraft by speaking to their pilots by radio
control zone /k.ntr.υl z.υn/ noun
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