喷气发动机运转时，前端的风扇吸入空气； 空气经过压缩后与燃油一道被点燃；高温的燃气迅速膨胀，咆哮着冲出尾喷管。
When a jet engine is running, a fan at the front draws in air, which is then compressed and burned with fuel to produce hot, rapidly expanding gases which roar out of the back.
在发动机风扇周围的可卸盖壳，打开后可以够到发动机部件。
A covering around the fan section of the engine that can be opened for access to the components on the engine.
在发动机风扇周围的可卸盖壳，打开后可以够到发动机部件。
A covering around the fan section of the engine that can be opened for access to the components on the engine.
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