备用空速表
/ˈstandbaɪ ˈeəspiːd ˈɪndɪkˌeɪtə/
n
English: standby airspeed indicator · 备用空速表
English · standby airspeed indicatorEspañol · anemómetro de emergenciaFrançais · anémomètre de secours
释义：Instrument that shows the aircraft’s speed; it is used in the event the flight display fails.