张永生

  • 网络Zhang YS;Yock Zhang
张永生张永生
  1. 摄影测量与遥感专家张永生教授

    Prof. Zhang Yong-sheng , An Expert in Photogrammetry and Remote Sensing

  2. 我国适航工作任重而道远&访中国民航总局适航司副司长张永生

    How to Go for China Airworthiness in the Furture & Interviewing with Zhang Yongsheng , Deputy Director General of Aircraft Airworthiness Department of CAAC