QUICK TURNAROUND LIMITS, Established the              快速周轉極限，

minimum amount of time to cool the wheel brakes         在下一個起飛許可之前，已確定的飛機輪剎車的最少冷

before the next take off is permitted.                卻時間。

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英漢對照民用航空詞典                                    BOEING

QUIESCENT, Condition of an electrical circuit when no 寂靜狀態，

input signal is applied to it.                         電路上沒有輸人信號的狀態。

 R

RACK, A place for storage of modules in the          支架，

electrical/electronic equipment compartment.           電氣／電子設備艙內，用以存放組件的地方。

RADAR, A device which measures the time between the  雷達，

transmission and reception of radio pulses and provides 測量無線電脈沖從傳輸到接收所需的時間，并提供范

information on range, azimuth, and/or elevation of   圍，方位，和／或脈沖信號傳輸途徑上物體標高的裝置。

objects in the path of the transmitted pulses.

RADAR VECTORS, Headings given to the pilot from a    雷達引導，

controller using radar.                                由使用雷達的空中交通管制員給予飛行員的航向。

RADIAL, A magnetic bearing extending from a          徑向線，

VORNORTACITACAN navigation facility.                     由甚高頻全向信標/塔康聯合定位／塔康系統導航設

                                                     施發射出來的磁方位線。

RADIO ALTITUDE (HEIGHT) (RA), The distance of an     無線電高度（RA），

aircraft above the ground, as determined by a radio      由無線電高度表系統測定的飛機與地面的距離。

altimeter system.

RAM, SEE - RANDOM ACCESS MEMORY                      隨機存取存儲器，

                                                       見 Random Access Memory