Solid rocket propellant burns very rough.

固体火箭推进剂剧烈燃烧。

And those solid rocket boosters might look familiar.

这些固体火箭助推器可能看起来很眼熟。

The solid rocket boosters are made up of proprietary material.

固体火箭助推器由专门的材料组成。

That's the company that builds the two solid rocket boosters on SLS.

就是这家公司在SLS上制造了两个固体火箭助推器。

And the solid rockets are important because they provide about 90% of the thrust needed to get spaceline system off the ground.

固体火箭很重要，因为它们提供了使航天系统离开地面所需的大约 90% 的推力。

It had the trademark shuttle look with two solid rocket boosters and a giant external fuel tank supplied the orbiters three main engines.

它有标志性的航天飞机外观，有两个固体火箭助推器和一个巨大的外部燃料箱，这就为轨道飞行器提供了三个主发动机。

And that material is a hard material that is lit together from the inside out, which creates thrusts for those solid rocket boosters.

而且这种材料是一种坚硬的材料，由内向外被一起点燃，为那些固体火箭助推器提供推力。

I mean, we expected some of that to be different, just because it was a liquid-fueled rocket and the shuttle had solid rocket boosters, so that was going to be different.

我的意思是，我们期待着一些不同，因为这是液体燃料火箭，而航天飞机有固体火箭助推器，所以这是不同的。

So once a stage is completely depleted of its fuel, you no longer need it, so these two particular solid rocket boosters, they're the first to fall off for the Space Launch System.

所以一旦某个级的燃料完全耗尽，你就不再需要它了，所以这两个特殊的固体火箭助推器，它们是太空发射系统中最先脱落的。

Now, when you're talking about a more complex rocket, such as NASA's Space Launch System, you are looking at a propulsive system but your propulsive system is going to include these solid rocket boosters here, which includes solid propellant.

当你谈论更复杂的火箭时，比如 NASA 的太空发射系统，你看到的是推进系统，但你的推进系统会包括这些固体火箭助推器，其中包括固体推进剂。