Mach
noun[U]
uk/mɑːk//mæk/us/mɑːk//mæk/ameasurementofspeedthat iscalculatedbydividingthespeedof anobject,especiallyanaircraft, by thespeedofsound
马赫（飞行速度与音速之比值）Measurements of speed
- accelerometer
- cadence
- G, g
- knot
- kph
- mph
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