时间：2011-02-23 15:20来源：蓝天飞行翻译 作者：航空 点击：次
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2. relative elevations of the Earth’s sur-face, or features of a geographical area . The general circulation is compli-cated because the Earth tilts and its sur-face is neither level, because of topog-raphy, nor uniform due to areas of land and sea. tornado /t.ne.d.υ/ noun a violent storm of small extent, with rotating winds . The winds of a tornado are of hurricane force. torque /t.k/ noun a moment of forces causing rotation . Torque forces try to bend the propeller against the direction of rotation. . High current flows through both the field and armature windings producing the high torque required for engine starting. torquemeter /t.kmit./ noun a device for measuring forces (torque) causing rotation . Engine torque is used to indicate the power that is developed by a turboprop engine and the indicator is known as a torquemeter. torsion /t..(.)n/ noun twisting, especially of one end of a body while the other is fixed . Rivets are subjected to torsion and may break. torsion load /t..(.)n l.υd/ noun the load caused by twisting of a struc-ture total /t.υt(.)l/ adjective complete, whole . Of the total amount of radia-tion emitted by the sun, the Earth receives only a very small part. . total system failure complete system failure . total seating capacity the maximum number of passengers who can be accommodated on seats touch down /tt. daυn/ verb to make controlled contact with the land-ing surface after a flight . If the atmos-pheric pressure at an airfield is 1,000 millibars (mb) and that pressure is set on the sub-scale of an aircraft altimeter, when the aircraft touches down at the airfield, the altimeter will read zero. touchdown /tt.daυn/ noun the moment, after a flight, when the aircraft makes controlled contact with the land- 235 transform ing surface . One of the aircraft’s tyres burst on touchdown. touchdown point /tt.daυn p..nt/ noun the place on the runway where the aircraft undercarriage first touches the ground on landing tow /t.υ/ verb to pull an aircraft or vehicle using a bar, rope, etc. attached to another aircraft or vehicle . The glider was towed into the air by a Rol-lason Condor. tower /taυ./ noun a tall airport or air-field air traffic control building . Wait for permission from the tower before crossing an active runway. ‘T’ piece adapter /ti pis . dpt./ noun a device for connecting two inputs to one output or vice versa track /trk/ noun a projection on the Earth’s surface of the path of an aircraft, which can be expressed in degrees from north . Where an aircraft track and wind direction are the same, there will be a headwind component acting on the aircraft. . The actual track does not necessarily follow the planned track and is given the name track made good. . verb to follow a line of the flight path of an aircraft, as projected on the Earth surface . On final approach, track the imaginary extended centre line of the runway. |
