义词是亮。

DIODE, A device which allows electronic current to flow 二极管，

in only one direction                                     只允许电流向一个方向流动的电子装置。

DIPSTICK, A calibrated rod or stick for measuring a     量尺，

quantity of fluid in a reservoir.                         校准过的棒或尺，用于测定蓄液器内液体的量。

DIRECT, Straight line flight between two navigational   直飞，

aids, fixes, points or any combination thereof. When      两个导航台，定位点，导航点，或任何的组合之间的直

used by pilots in describing off-airway routes, points  线飞行。在被飞行员用于描述偏置航路时，除了在雷达控

defining direct route segments become compulsory        制的情况下，确定直线航段的导航点成为必报点。

reporting points unless the aircraft is under radar

control.

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英汉对照民用航空词典                                       BOEING

DIRECT MEMORY ADDRESSING, Data transfer within          直接存储器寻址，

a computer directly with the memory without central       不通过中央处理器，计算机数据与记忆的直接传输。

processing unit intervention.

DISARM, A component when disarmed is not ready to       解除预位，

operate.                                                  解除预位后的部件，不能立即开始工作。

DISK VALVE (OBSOLETE TERM - BUTTERFLY                   盘式活门，（老式叫法：蝶形活门），

VALVE), An actuator-operated, rotating device in a duct   利用作动简进行操作，安装在管道上的旋转装置。用来

for closing and opening the duct passage.               控制管道的通断。

DISPATCH DEVIATION, Variation from certified            缺件放行形态变动，

configuration which is authorized by MEL or CDL to        从最低设备清单和缺件单准许的飞机安全操纵形态的