Production and application of thrust bearing,and guide bearing made of filled PTFE in submarine motor pump are introduced.

 
  • 介紹了潛水泵中止推軸承與導向軸承用填充聚四氟乙烯材料進(jìn)行的生產(chǎn)和應用。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan