mach怎麽讀
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- mach英語什麽意思:n.【物理學】馬赫〔超高速單位,馬赫數,=Mach number〕。
- mach法語什麽意思:音標:[mak]machm.馬赫數(m數)mach critique臨界馬赫數(m數)