单词	Machmeter
释义	Machmeter /ˈmɑːkmiːtə / /ˈmakmiːtə/ noun An instrument in an aircraft indicating airspeed as a Mach number.Alternatively, the machmeter may be combined with the Air Speed Indicator (ASI), in which case it is often referred to as a Combined Speed Indicator (CSI).... No increase in speed was observed but he sensed that the drag level had increased, so he steepened the angle of dive until 0.96 appeared on the Machmeter. On most aircraft you use your CAS to determine TAS up to a certain altitude, then use the Machmeter beyond that altitude.
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