Above some altitude within atmospherelayer, the boundary layer on after body will separate due to plume.
在大气层某一定的高度以上，火箭后体上的边界层将会由于羽流引起分离。
2
The aviation bomb is flying in the high density atmospherelayer. Its fight Mach number is generally 0.9.
航弹主要是在稠密的大气层中飞行，巡航马赫数一般在0.9附近。
3
The fragments themselves almost certainly contained no sulfur, but astronomers believe that the cloud layer below Jupiter's outer atmosphere does contain sulfur.