mach

例句:

• Mach's principle is subject to various interpretations however.
  来自SA
• Empirical results are needed in the transonic Mach regime.
  在跨音速马赫数范围内需要经验结果.
  
• The hot air permitted higher speeds before the critical Mach number was exceeded.
  热空气可使之在超过临界马赫数之前达到更快的速度。
  
• The aim is to fly at about Mach 2, twice the speed of sound.
  目标是以大约2马赫的速度飞行，也就是音速的两倍。
  
• I believe something like Mach's principle is at work.
  来自SA
• Daniel Mach is Director of its Program on Freedom of Religion and Belief.
  来自VOA