音速 (yīn sù) — speed of sound

定義

例文

• 这架飞机的速度已经超过了音速。
  Zhè jià fēi jī de sù dù yǐ jīng chāo guò le yīn sù.
  This aircraft's speed has already exceeded the speed of sound.
• 音速在空气中大约是每秒340米。
  yīn sù Zài kōng qì zhōng dà yuē shì měi miǎo 340 mǐ.
  The speed of sound in air is about 340 meters per second.
• 科学家正在研究如何突破音速。
  Kē xué jiā zhèng zài yán jiū rú hé tū pò yīn sù.
  Scientists are researching how to break the sound barrier.