Supposedly, it was developed by NASA as a solid rocket fuel.

据说，这种东西最早是由NASA作为固体火箭燃料而研发的。

Solid rocket motor design is a complicated systems engineering.

固体火箭发动机设计是一项复杂的系统工程。

The external tank and solid rocket boosters are waiting in the VAB .

航天飞机外贮箱和火箭推进器就在该中心等待装配。

The gleaming white Ares I-X, at its core, is a giant solid rocket booster.

闪闪发亮的白色战神i - X的核心是一个巨型固体燃料火箭推进器。

Good references for solid rocket motor nozzle design and research are provided.

可为固体火箭发动机喷管的设计与研究提供有效参考。