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殲20試飛集 |
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點評
那是發(fā)動機(jī)噴口,,通過調(diào)節(jié)噴口大小來調(diào)節(jié)噴氣量就可以調(diào)節(jié)飛機(jī)速度,!如果可以偏轉(zhuǎn)方向的噴口就是矢量噴口了,。
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