Mach
A turn of phrase employed by President George W. Bush that is unintentionally comical due to grammatical errors, malapropisms, etc.
(physics) a ratio of the speed (of an object, etc.) to the speed of sound in the fluid or other medium through which the object travels. Usually used to describe supersonic speeds; the Mach number.
plural of Birden
plural of olympiadane
研究論文は、実験機が管理された条件下で音速の1.5倍の速度に達したと報告した。
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