At the sime time,the manufacture technology of the filter made from the new filter material is studied and approached preliminrily.

 
  • 同時(shí)對用這一新型的過(guò)濾材料制作過(guò)濾筒的工藝進(jìn)行了初步探討和研究。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan