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Cao Hongfa

 

 Cao Hongfa, a research fellow of Locomotive & Car Research Institute of China Academy of Railway Sciences Corporation Limited with master’s degree, is mainly engaged in R&D of EMU braking system technology and product. He has addressed key  challenging technical issues such as braking control logic, high heat load friction pair, high-speed anti-skid strategy, intelligent diagnosis and interoperability, fully mastered system integration technology, core technology, test and verification technology, application and maintenance technology, etc. and won state-level science and technology awards.
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   又黄又爽又色又刺激的视频,性色AV浪潮AV色欲AV,最新热播电视剧全集在线观看,a级毛片内射免费视频,亚洲欧美无人区乱码