名词
中文翻译：Unknown
同义词：
['rocket engine', 'rocketpropulsion unit']
例句：
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1. The rocket propulsion systemis responsible for the spacecraft'slift-off and ascent.
火箭推进系统负责航天器的起飞和上升。
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2. Therocket propulsion system is acrucial component of the spacecraft'spower system.
火箭推进系统是航天器动力系统的关键环节。
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3. The rocket propulsion system is designed to provide thrust forthe spacecraft's flight.
火箭推进系统设计用于为航天器飞行提供推力。