pilot direction indicator中文什么意思

• 飞行航向指示器
• 驾驶航向指示器

• pilot:    n. 1.领港员，舵手；【航空】驾驶员，飞行员；领航员； ...
• direction:    n. 1.方位，方向；范围，方面。 2.〔pl.〕 指挥 ...
• indicator:    n. 1.指示者；指示物；标识。 2.【化学】指示剂。 ...
• direction indicator pilot light:    转向指示表板灯
• pilot indicator:    导频电平指示器; 导频指示器导航指示器

百科释义

A pilot direction indicator, or PDI, is an aircraft instrument used by bombardiers to indicate heading changes to the pilot in order to direct them to the proper location to drop bombs. The PDI is used in aircraft where the pilot and bombardier are physically separated and cannot easily see each other.