LEADING EDGE FLAP, SEE - FLAP                          前缘襟翼，

                                                         见Flap．

LED, SEE - LIGHT EMITTING DIODE                        发光二极管，

                                                         见 Light Emitting Diode．

LEMAC, Acronym for Leading Edge of the Mean            平均气动弦前缘，

Aerodynamic Chord.                                       平均气动弦前缘的缩写。见 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.           飞机因巡航时发动机发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.                    气流流过机翼上下表面所产生的垂直力。

LIGHT EMITTING DIODE, An electronic device which       发光二极管，

illuminates with red, amber or green light when supplied 通电后能发出红色，琥珀色，或绿色光的电子元件。

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.               仪表板的一个部件，用以照亮仪表板上的文字。

LIGHT SWITCH, A switch which contains a light. The        灯光电门，

light either turns on or off as the switch is opened or     带灯的电门。电门开关而决定灯的明灭。

closed.