aircraft in relation to the moving air. The true airspeed is 飛機相對于流動中的大氣的實際速度。由指示空速經過

equal to the indicated airspeed corrected for position  位置、壓力和溫度校正而得。

error, compressibility, and temperature effects.

TRUTH TABLE, in digital logic, a table which describes  真值表，

a logic function by listing all possible combinations of  數學邏輯中用來表達邏輯函數的表。該表列出了所有可

input values and shows the output value for each input  能的輸人組合，和每個輸人組合所產生的輸出值。

combination.

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英漢對照民用航空詞典                                       BOEING

TURBINE, A rotating part of an engine which extracts     渦輪，

kinetic energy from the combustion chamber gases.          發動機內，從燃燒過的高溫高壓氣體中擷取動能的轉動

This energy is converted to turbine rotation which       部份。該動能使渦輪轉動，渦輪則經由同心軸帶動壓氣機

rotates the compressors and fan through a coaxial        和風扇。

shaft.

TURBINE CASE COOLING, A method of cooling the            渦輪機匣冷卻，

engine by using fan air. This cooling process is used to   用風扇空氣冷卻發動機的一種方法。該冷卻過程被用于

increase engine efficiency.                              提高發動機效率。

TURBOFAN,                                                渦輪風扇，

    (1). A jet engine in which the first set of blades is a （1）．第一組葉片構成一個大風扇的噴氣發動機。

         large fan.

    (2). An air driven fan/compressor used in air           （2）．空調系統內的由空氣驅動的渦輪和壓氣機組合。

        conditioning system.

TURBULENCE, The movement or shaking of an                顛簸，

airplane caused by unstable air masses.                    由不穩定的空氣團造成的飛機運動或抖動。

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