absorb a predetermined amount of energy during a      大起飞重量。

rejected takeoff.

BREATHER, A vent to ambient of the engine oil system. 通气装置，

                                                        发动机滑油系统与大气相通的通气口。

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英汉对照民用航空词典                                     BOEING

BUFFET, Vibration of the wings and airframe resulting 抖振，

from unsteady airflow over the wing; caused when        由于机翼上表面的不稳定气流引起的机翼和机体的振

airspeed is too slow, the bank angle is too steep, or 动。飞行速度太慢或太快，坡度太大，均会引起抖振。

airspeed is too fast.

BUILT-IN TEST EQUIPMENT, Equipment installed on       自检设备，

the airplane and in airplane systems to test the systems 安装在飞机和飞机系统中，在无外接检测设备情况下，

without external test equipment.                      用于检测系统的设备。

BUFFET MARGIN, The amount of residual maneuver        抖振裕度，

capability present before the onset of buffet.          飞机在遭遇抖振之前，剩余机动能力的大小。

BUG SPEED, A preselecteed speed to be observed        游标速度，

during certain maneuvers, particularly the approach and 在某些机动飞行过程中，特别是在进近和着陆时，飞机

landing sequence.                                     所应保持的预定速度。

BULKHEAD, A structural partition in the fuselage or   壁板式隔框，

wing.                                                   机身或机翼内一种结构隔板。

BUNGEE, A mechanical device (spring or a shock        张力装置，

absorber) for assisting landing gear operation.         用于协助起落架工作的一种机械设备（弹簧或减震器）。

                                                      汇流条，