LIMIT SWITCH, A mechanically operated component in        极限电门，

an electric actuator which turns off electrical power to    在电作动筒内，用以在作动简到达打开或关闭位置

the actuator when the actuator reaches its open or        时，切断电源的机械式操作的部件。

closed position.

LIMITATIONS, Performance and operational limits           各种极限，

listed in the Airplane Flight Manual (AFM), such as         飞机飞行手册（AFM ）中列出的性能限度和操作极限，

maximum airspeed, maximum altitude and center of          如最大空速，最大高度，和重心的限制等。

gravity constraints.

LINE REPLACEABLE UNIT, A unit which can be readily        航线可换件，

changed on an aircraft during line maintenance              在航线维修中，可以在飞机上即时拆换的部件。

operations.

LINE SELECT KEYS, Switches on the FMCS control            行选键，

display unit allowing control of information to and from    飞机管理控制系统的控制显示器上的电门，可控制草稿

the scratch pad and designated areas of the display.      栏和指定显示处信息的输人和输出。

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英汉对照民用航空词典                                     BOEING

LINEAR VARIABLE DIFFERENTIAL TRANSFORMER,             线性可变差动变压器，

A differential transformer with a linear response.      具有线性反应的差动变压器。

LINK, A short connecting rod for transmitting motion. 连杆，

                                                        连接在两个部件之间，用以传递运动的短棒。

LNAV, SEE - LATERAL NAVIGATION                        水平导航，

                                                        见Lateral Navigation．

LOAD AND TRIM SHEET, A form containing tables and     载重和平衡表，

charts to account for the weight and balance effect of all 有着显示每个航班前飞机的各项业载和所加燃油对重