two compartments that opens to equalize pressure in   兩個(gè)隔艙之間的口蓋，打開后可使兩艙壓力相等。

the compartments.

BODY GEAR, The landing gear attached to the         機(jī)身起落架，

fuselage structure.                                   裝在機(jī)身構(gòu)架上的起落架。

BONDING JUMPER, An electrical connection between    搭接片，

a component and airplane structure for electrical     連接某個(gè)部件與飛機(jī)結(jié)構(gòu)以形成接地的電接頭。

grounding.

                                    TECHNICAL DICTIONARY                                 21

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英漢對(duì)照民用航空詞典                                     BOEING

BOOLEAN ALGEBRA, A mathematical system for            布爾代數(shù)，

writing combinations of logical statements.             一種用于編寫復(fù)合邏輯命題的數(shù)學(xué)系統(tǒng)。

BOOST PUMP, An electrically operated fuel pump for    增壓泵，

fuel supply from the airplane fuel tank to the fuel     從飛機(jī)油箱向總油管提供燃油的電動(dòng)泵。

manifold.

BORESCOPE, An electro-optical device for looking at   孔探儀，

internal parts of an engine through holes in the engine. 用于通過(guò)發(fā)動(dòng)機(jī)內(nèi)的孔（孔探口）觀察發(fā)動(dòng)機(jī)內(nèi)部件的

(borescope ports)                                     電光設(shè)備。

BOURDON TUBE, A curved flat tube in a pressure gage   包端管，

for moving the pointer when pressure changes inside     測(cè)壓計(jì)內(nèi)的彎曲扁管，管內(nèi)壓力的變化時(shí)它使指針移

the tube.                                             動(dòng)，以指示壓力。

BRACKET, To enclose or surround.                      托架，

                                                          用于作支撐、裝托、或圍繞之用。

BRAKE ENERGY LIMIT WEIGHT, The maximum                剎車能量極限重量，

takeoff weight based on the ability of the brakes to    中斷起飛過(guò)程中，取決于剎車吸收預(yù)定能量之能力的最