Engine 发动机； Thrust/Reversed Thrust 推力/反推力； Electrical Power 电源； Pneumatic 气 源； Hydraulic Power 液压源； Fan 风扇； Bearing 轴承； Engine Driven Pump 发动机驱动泵； IDG Integrated Drive Generator 整体驱动发电机； Fuel Metering Unit (FMU) 燃调组件； LP Compressor 低压压气机； HP Compressor 高压压气机； Diffuser/Combustor 扩压器/燃烧室； HP Turbine 高压涡轮； LP Turbine 低压涡轮； Accessory Drive Gearbox 附件驱动齿轮箱；
BLANK DISPLAY, A display that does not have any indications, normally due to failure. 空白显示， 通常因故障而造成的显示器上没有任何指示。 BLACK BOX, A container for electronic circuits to record flight data. 黑匣子， 装有用于记录飞行数据的电路系统的容器。 BLEED VALVE, A valve in the pneumatic system for air supply from the engine or auxiliary power unit to the pneumatic manifold. A valve on the engine for reducing pressure in the compressor section. 引气活门， 气源系统内，使来自发动机或辅助动力装置的空气进人气源支管的活门。发动机上，用来降低压气机压力的活门。 BLOCKER DOOR, A device on the engine for blocking the normal airflow during thrust reverser operation. 阻流门， 发动机上的一个装置。在反推工作时用于阻挡正常的气流。 BLOWER, An electrically operated fan for circulating air. 鼓风机， 用来使空气循环的电动风扇。 BLOWOUT PANEL, A panel in the structure between two compartments that opens to equalize pressure in the compartments. 卸压口盖， 两个隔舱之间的口盖，打开后可使两舱压力相等。 BODY GEAR, The landing gear attached to the fuselage structure. 机身起落架， 装在机身构架上的起落架。 BONDING JUMPER, An electrical connection between a component and airplane structure for electrical grounding. 搭接片， 连接某个部件与飞机结构以形成接地的电接头。 BOOST PUMP, An electrically operated fuel pump for fuel supply from the airplane fuel tank to the fuel manifold. 增压泵， 从飞机油箱向总油管提供燃油的电动泵。 BORESCOPE, An electro-optical device for looking at internal parts of an engine through holes in the engine. (borescope ports) 孔探仪， 用于通过发动机内的孔（孔探口）观察发动机内部件的电光设备
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