BUS, A single wire or group of wires which transfers    在部件或組件之間傳輸電、數據、或定時的單一電線或

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

modules.

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BUS DRUM, A mechanical connection with pulleys and    轉動鼓輪，

cables in the control system.                           在操縱系統中，具有滑輪和鋼索的機械式連接。

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

containing electrical circuits for control and protection of 黑匣子式的組件，內含控制和保護飛機交流電源的電

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       是一個在管道中由作動簡控制的轉動裝置。用來關閉和

passage.                                              開啟管道。

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

fuselage for horizontal measurements of the airplane.   沿機身走向的垂直參考面，用于飛機的水平測量。

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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所經過的活門。

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

usually eight bits long.                               一組或一列二進制數。通常一個字節長8位。

C