rocket motor

• 火箭发动机

rocket motor的用法和样例：

例句

1. Rocket motors have many advantages over other forms of propulsion.
   火箭发动机比其他推进器有许多优点。
2. The liquids employed for rocket propulsion are called propergols.
   用于火箭发动机的液体称为液体火箭推进剂。