The Experience Relationship between Fin-height and Rough Tube Wall-thickness for Cold-drawn Outer-spiral-fim Tube

 
  • 冷拔外螺紋銅管凸筋高度與坯料壁厚之間的經(jīng)驗關(guān)系式
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan