短語詞組短語air -speed Mach indicator 空速馬赫指示器air r speed indicator 空速表true air -speed indicator 真空速表maximum safe air -speed indicator [航]最大安全空速指示器indicated air speed indicator 指示空速計navigational air speed indicator 導航空速指示器True Air speed Indicator 實際空速指示器indicated d air speed indicator 指示空速計 返回 air speed indicator