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Mach number
tech.	Machzahl f
transp., avia.	Machsche Zahl
transp., tech.	Mach-Zahl,Machsche Zahl
mach number
gen.	Mach-Zahl m
English thesaurus
Mach number
avia., amer.	The ratio of the speed of an object to the local speed of sound
meteorol., abbr.	M
MACH number
post	4 digit number identifying PSDS input device (MODS report abbreviation)

Mach number: 20 phrases in 4 subjects

Earth sciences	6
General	2
Physics	3
Transport	9