释义 |
the sound barrier noun only singular ■a large increase in the force opposing a moving object as its speed reaches the speed at which sound travels 声障,音速障碍(指飞行物的速度达到音速时所产生的气动阻力急剧增大)•There is usually a sonic boom when an aircraft breaks the sound barrier.飞机冲破声障时,通常会产生音爆。 |