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China is mourning the death of Yu Xu, the country's first female J-10 jet pilot who was killed during an aerobatic training session on Saturday.
星期六，中国的首位歼-10女飞行员余旭在一次飞行想法中不稼不穑牺牲，中国民众为其哀悼。
Li Yu, Liu Jingsen, Mechanism and Improvement of Direct Anonymous Attestation Scheme[J], Journal of Henan University, 2007, 37(2), P195-197 (Ch).
李煜，刘景森，直接匿名证言方案的实现机制与改进思路[J]，河南大学学报，2007，37（2），P195-197。
Zhang YX, Xia RY, Yu GQ, et al. Grafting of radius periosteum flap pedicled with fascia and vessel in treatment of old scaphoid fracture. Chin J Orthop Trauma, 2004, 6:708-709.
张炎祥，夏仁云，余国庆，等。带筋膜血管蒂桡骨骨膜骨瓣移植治疗陈旧性舟骨骨折。中华创伤骨科杂志，2004,6：708 - 709。
HUA Changchun, YU Caixia. Controller Design for Cold Rolling Mill HAGC System with Measurement Delay Perturbation [J]. Journal of Mechanical Engineering, 2014, 50 (20) : 46-53.
[8]华长春，于彩霞。含有测量时延摄动的冷轧机厚控系统控制器设计[J]。机械工程学报，2014,50 (20)：46 -53。
HUA Changchun, YU Caixia. Controller Design for Cold Rolling Mill HAGC System with Measurement Delay Perturbation [J]. Journal of Mechanical Engineering, 2014, 50 (20) : 46-53.
[8]华长春，于彩霞。含有测量时延摄动的冷轧机厚控系统控制器设计[J]。机械工程学报，2014,50 (20)：46 -53。
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