b) If the OFF light on the flight data recorder/mach airspeed warning panel, P5, is off, then you corrected the fault.是什么意思_b) If the OFF light on the flight data recorder/mach airspeed warning panel, P5, is off, then you corrected the fault.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句