hypersonic [ˌhaɪpə'sɒnɪk]

例句:

• Hypersonic wind tunnels operating at very low densities were developed starting in about 1960.
  低密度超音速风洞大约开始发展于1960年.
  
• It would reach hypersonic speeds -- five times the speed of sound.
  也就是说,要使飞机达到特超音速—即音速的五倍.
  
• In this thesis, the aerodynamic heating methods of hypersonic projectile are presented.
  本论文进行了高超声速弹丸的气动热研究.