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

the compartments.

BODY GEAR, The landing gear attached to the         機身起落架，

fuselage structure.                                   裝在機身構架上的起落架。

BONDING JUMPER, An electrical connection between    搭接片，

a component and airplane structure for electrical     連接某個部件與飛機結構以形成接地的電接頭。

grounding.

                                    TECHNICAL DICTIONARY                                 21

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英漢對照民用航空詞典                                     BOEING

BOOLEAN ALGEBRA, A mathematical system for            布爾代數，

writing combinations of logical statements.             一種用于編寫復合邏輯命題的數學系統。

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

fuel supply from the airplane fuel tank to the fuel     從飛機油箱向總油管提供燃油的電動泵。

manifold.

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

internal parts of an engine through holes in the engine. 用于通過發動機內的孔（孔探口）觀察發動機內部件的

(borescope ports)                                     電光設備。

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

for moving the pointer when pressure changes inside     測壓計內的彎曲扁管，管內壓力的變化時它使指針移

the tube.                                             動，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    中斷起飛過程中，取決于剎車吸收預定能量之能力的最