The Long March-11 is the only series in the Long March family that uses solid propellants.

长征11号是长征家族中唯一一个使用固体推进剂的火箭。

If North Korea's report is true, analysts say it would mark the North's first use of solid propellants in an intermediate range or intercontinental ballistic missile.

分析人士表示，如果朝鲜的报告属实，这将标志着朝鲜首次在中程或洲际弹道导弹上使用固体推进剂。

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。