1988年11月20日至22日在中国有色金属总公司军工办和航空航天部供销公司的主持下,Ti-451“轻型航空防弹装甲板”和“飞行事故记录仪壳体”两项成果在宝鸡通过了部级鉴定。这两项课题都是中国有色金属总公司和航空航天工业部的重要科研项目,并纳入了国家 From 20 to 22 November 1988, under the auspices of the China Non-Ferrous Metals Corporation Military Administration and the Aerospace Department Supply and Marketing Company, two achievements of the Ti-451 “Light Aviation Anti-aircraft Armor Plate” and “Flight Incident Recorder Shell” Baoji passed ministry appraisal. These two topics are important research projects of China Nonferrous Metals Corporation and the Aerospace Industry Department and have been included in the national