单词：rocket engine
rocket engine的用法和样例：
例句
- Another unconventional design element, the hybrid rocket engine that powers the suborbital vehicle, provides unique operational options.另一个异于传统的设计要素，是提供次轨道载具动力的混合式火箭引擎，它能提供独特的操作选择。
- For one thing, they simplify the design of a rocket engine.首先，它们可以简化火箭发动机的设计。
- 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。
- rocket火箭
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