マッハ数 じゃありませんでした
mahhasūjārimasendeshita
1. It was not Mach.; It wasn't a Mach number.
Noun
#294683
1. It was not Mach.; It wasn't a Mach number.
1. several years; a few years
1. suit (clothing)
2. suit
1. a few years ago; some years back
1. pupil; disciple
1. several times; a few times
1. several months
1. number of days
1. (common) cold; influenza