Research on NC-machining Technique and Improvement of Grinding Technique for X-shape Runner Blades of Francis Turbine in Three Gorges Project

 
  • 三峽電站轉輪葉片數控加工工藝及提高鏟磨質(zhì)量的工藝研究
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan