BUS, A single wire or group of wires which transfers    在部件或組件之間傳輸電、數(shù)據(jù)、或定時(shí)的單一電線或

power, data, or timing between several units or       電線組。

modules.

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BUS DRUM, A mechanical connection with pulleys and    轉(zhuǎn)動(dòng)鼓輪，

cables in the control system.                           在操縱系統(tǒng)中，具有滑輪和鋼索的機(jī)械式連接。

BUS PROTECTION PANEL, A module (black box)            匯流條防護(hù)板，

containing electrical circuits for control and protection of 黑匣子式的組件，內(nèi)含控制和保護(hù)飛機(jī)交流電源的電

electrical alternating current supply to the airplane. 路。

BUTTERFLY VALVE, An actuator-operated, rotating       蝶形活門，

device in a duct for closing and opening the duct       是一個(gè)在管道中由作動(dòng)簡(jiǎn)控制的轉(zhuǎn)動(dòng)裝置。用來關(guān)閉和

passage.                                              開啟管道。

BUTTOCK LINE, A vertical reference plane along the    縱剖線，

fuselage for horizontal measurements of the airplane.   沿機(jī)身走向的垂直參考面，用于飛機(jī)的水平測(cè)量。

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BYPASS VALVE, A valve through which air or fluid will 旁通活門，

flow if the normal flow path is blocked.               氣流或液流在正常通道阻塞時(shí)所經(jīng)過的活門。

BYTE, A group or string of binary digits. A byte is  字節(jié)，

usually eight bits long.                               一組或一列二進(jìn)制數(shù)。通常一個(gè)字節(jié)長(zhǎng)8位。

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