这些气体让阳光自由地进入大气层。
1977年，航天飞机原型企业作出了首次自由飞行，在地球的大气层，从747后可能进行得高高的分离。
In 1977, the space shuttle prototype Enterprise made its first free flights, in Earth's atmosphere, after separating from the 747 that carried it aloft.
当它打破这个化学键，氯原子，一个自由的氯原子下来，和在大气层的上方的臭氧反应，这就是臭氧，在大气上层有臭氧。
When it breaks this bond, that chlorine atom, a free chlorine atom comes down and reacts, this is ozone, with the ozone in the upper atmosphere.
针对大气层外高速飞行的动能拦截器，描述了末制导段拦截器的六自由度运动学方程。
Six-degree of freedom equations are described for high-speed interceptor flying in extra-atmospheric space.
针对大气层外高速飞行的动能拦截器，描述了末制导段拦截器的六自由度运动学方程。
Six-degree of freedom equations are described for high-speed interceptor flying in extra-atmospheric space.
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