无内含供氧系统的发动机：一种从空气中获得所需氧气的发动机，尤用于推进飞机飞行，并以拥有自带燃料氧化系统区别于火箭发动机。
An engine that obtains the oxygen needed from the atmosphere, used especially to propel aircraft and distinguished from rocket engines having self-contained fuel-oxidizer systems.
无内含供氧系统的发动机：一种从空气中获得所需氧气的发动机，尤用于推进飞机飞行，并以拥有自带燃料氧化系统区别于火箭发动机。
An engine that obtains the oxygen needed from the atmosphere, used especially to propel aircraft and distinguished from rocket engines having self-contained fuel-oxidizer systems.
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