LEADING EDGE FLAP, SEE - FLAP                          前緣襟翼，

                                                         見Flap．

LED, SEE - LIGHT EMITTING DIODE                        發(fā)光二極管，

                                                         見 Light Emitting Diode．

LEMAC, Acronym for Leading Edge of the Mean            平均氣動弦前緣，

Aerodynamic Chord.                                       平均氣動弦前緣的縮寫。見 Leading Edge of the Mean

                                                       Aerodynamic Chord ．

LEVEL-OFF ALTITUDE, Altitude of which the airflow      改平高度，

past the upper and lower surfaces of the wing.           飛機因巡航時發(fā)動機發(fā)生故障而下降至的高度。

LIFT, The vertical force produced by the airflow past the 升力，

upper and lower surfaces of the wing.                    氣流流過機翼上下表面所產(chǎn)生的垂直力。

LIGHT EMITTING DIODE, An electronic device which       發(fā)光二極管，

illuminates with red, amber or green light when supplied 通電后能發(fā)出紅色，琥珀色，或綠色光的電子元件。

with electric current.

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LIGHT PLATE, A component part of an instrument            照明板，

panel for illumination of words on the panel.               儀表板的一個部件，用以照亮儀表板上的文字。

LIGHT SWITCH, A switch which contains a light. The        燈光電門，

light either turns on or off as the switch is opened or     帶燈的電門。電門開關(guān)而決定燈的明滅。

closed.