CHARGING VALVE, A valve for supplying air or fluid to 加添活门，

a reservoir.                                       用来向储存器充气或加液的活门。

CHECK VALVE, A valve allowing flow in only one   单向活门，

direction. See Non-Return Valve.                   仅容许单向流动的活门。见 Non－Return Valve。

CHECKSUM, In a computer, a summation of digits or 总和校验，

bits which are primarily used for error detection. 计算机中，把那些用来探测错误的数宇或位数的总和进

                                                 行求和计算。

CHIP DETECTOR, A magnetic plug in sumps of       金属碎屑探测器，

lubricated components for detection of internal failure of 装在被润滑的部件滑油回油管路上的磁性塞子。用来探

the component.                                   测部件内部有无损坏。

CHORD, A structural component of spars or frames. 翼弦，

                                                   梁或框架的结构部件。

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CIRCUIT, A closed path through which current flows       电路，

from a source, through various components, and back        一个闭合的回路。电流由源头流出，经过各个元件流回

to the source.                                           源头。

CIRCUIT BREAKER, A device that automatically             跳开关，

interrupts the flow of electricity (current) during fault  能在故障情况下自动中断电流以保护线路不受过电损

condition to protect wiring from excess current. Circuit 坏的装置。跳开关也可用于人工使系统无效。

breakers are also used as a means to manually

deactivate the system.

CLEARWAY 1, An area beyond the takeoff end of the        一号净空道，

runway which is clear of all non-frangible objects which   是跑道起飞端以外，不含任何刚体障碍物的区域。在计

may be used as takeoff distance available when           算起飞重量时该区域可作为可用起飞距离。