Results show that magnetism of fluid weighted by ilmenite powder or ferric oxide powder is the main factor of friction increasing.

 
  • 結果表明,磁性是鈦鐵礦粉和氧化鐵粉加重鉆井液摩阻增加的主要原因,潤滑劑不能從根本上解決這一問(wèn)題。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan