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standby airspeed indicator /ˈstandbaɪ ˈeəspiːd ˈɪndɪkˌeɪtə/ n

中文：备用空速表

中文 · 备用空速表Español · anemómetro de emergenciaFrançais · anémomètre de secours
Meaning：Instrument that shows the aircraft’s speed; it is used in the event the flight display fails.
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Cockpit

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