英语语法分析

Hydrogen injection and scramjet ignition testing.

氢注入及冲压点火测试。

But how does NASA plan to get the scramjet to the supersonic speeds necessary for sustained flight?

不过，太空署要如何使得超燃冲压发动机进入持续飞行需要的超音速呢？

Scramjet inlet is of great importance in the hypersonic airbreathing propulsion system and plays significant role in the realization of hypersonic flight.

高超声速进气道是高超声速吸气式推进系统的重要组成部分，对实现高超声速飞行起着关键作用。