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1993年7月17日天津市公安局在公安部天津消防科研所主持鉴定了“700m~3以下内浮顶汽油罐烟雾自动灭火技术的研究”成
July 17, 1993, Tianjin Public Security Bureau, Ministry of Public Security, Tianjin Fire Research Institute presided over the identification of “700m ~ 3 within the floating roof petrol tank smoke automatic fire extinguishing technology” into