The hot air permitted higher speeds before the critical Mach number was exceeded.热空气可使之在超过临界马赫数之前达到更快的速度。The aim is to fly at about Mach 2, twice the speed of sound.目标是以大约2马赫的速度飞行，也就是音速的两倍。Empirical results are needed in...
The hot air permitted higher speeds before the critical Mach number was exceeded.热空气可使之在超过临界马赫数之前达到更快的速度。The hot air permitted higher speeds before the critical Mach number was exceeded...热空气可使之在超过临界马赫数之前达到更快的速度。The aim ...
They were coming in to land on the north coast of Crete.他们将从克里特岛北海岸登陆上岛。Soon after 2000 BC, the people of Crete began building towns.公元前2000年后不久, 克里特人开始修筑城市.He's an archaeologist and has been on a dig in Crete for t...
抢劫犯一无所获地逃走了。The robbers fled empty-handed.抢劫犯猛击那个卫兵的头部使他晕了过去.The robber stunned the guard by banging him on the head.警车正在逼近抢劫犯.The police car was gaining ground on the robbers....