The modifying experiments on hypereutectic Al - Si alloy were made by addition of sodium flux and P - Cu alloy.

 
  • 用磷銅合金和四元鈉鹽變質(zhì)劑對過(guò)共晶鋁硅合金進(jìn)行了變質(zhì)處理試驗。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan