名词声障，声垒，音障
1. 声障：sound audition sensation 声音知觉 | sound barrier 声障 | sound board 声板
2. 隔声板：sound baffle 声音反射板 | sound barrier 隔声板 | sound boarding 隔音板
3. 声屏障：声发射:Sound emission | 声屏障:sound barrier | 探测声:probe sound
1. 声障;音障;声垒
If an aircraft breaks the sound barrier, it reaches a speed that is faster than the speed of sound.
1. Early on Tuesday after two rocket strikes on farming communities in Israel, helicopters launched the first assaults and warplanes broke the sound barrier over Gaza.
2. Friday's explosions were coupled with intense hovering of Syrian warplanes over the capital amid reports that the jet fighters have broken the sound barrier twice.
noun
1. the increase in aerodynamic drag as an airplane approaches the speed of sound
Synonym: sonic barrier