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成飞集团历经３０余年研制、生产、改进歼七系列飞机，不仅使飞机能适应现代化战争的需要，还走出了一条国产军机外贸出口的路子
After more than 30 years of development, production and improvement of the J-7 series of aircraft, the Chengdu Aircraft Group not only made the aircraft adapt to the needs of the modernized war but also stepped out of the path of the export of domestic military aircraft