solid propellant boosters

• 助推器

solid propellant boosters的用法和样例：

例句

1. NASA is now checking on the damage of lightning on Endeavor and its solid rocket booster.
   国家航空航天署正在检查奋进号航天飞机及其固体火箭助推器是否被闪电损坏。
2. There are prospects for reducing solid booster costs to make them financially more competitive.
   从长远的观点看，就降低成本来说，固体助推器更具有竞争能力。