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针对国家重点建设工程项目京九铁路干线的具体情况，谈HTK－391型红外轴温探测系统在京九线的运用中三率指标的保持和提高。
In view of the specific conditions of Beijing-Kowloon Railway main line of the state key construction projects, talk about the maintenance and improvement of the three-rate indicator in the application of HTK-391 infrared axial temperature detection system in the Beijing-Kowloon Railway.