CARD FILE, A container on the airplane for printed     线路板盒，

circuit cards.                                           飞机上安装印刷线路板的容器。

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CASCADE, Two or more similar circuits or amplifying   级联，

stages in which the output of one circuit provides the  两个或两个以上的类似电路的逐级连接或放大过程。该

input of the next.                                    过程中，一个电路的输出为下一个电路的输人。

CASCADE VANE, A vane for turning the engine airflow   叶栅叶片，

during operation of thrust reverser.                    在反推工作时，使发动机气流向相反方向流动的叶片。

CASE DRAIN, A drain carrying lubricating and cooling  泵匣余油管，

fluid from a hydraulic pump.                            液压泵多余的润滑液及冷却液的排放口。

CATHODE, The element from which the principal         阴极，

stream of electrons flows.                              电子流流出的极位。

CATHODE RAY TUBE, An evacuated glass tube with a      阴极射线管，

viewing screen, used for displaying information.        一个具有显象屏幕的真空玻璃管。用于显示信息。

CEILING, The height above the ground or water of the  云高（云底高），

base of the lowest layer of cloud below 6000 meters     6000米（20,000英尺）以下已覆盖一半以上天空的最

(20,000 feet) covering more than half the sky.        低云层底距离地面或水面的高度。

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英汉对照民用航空词典                                      BOEING