A sort of chilled nodular iron camshaft was developed by adopting resin-coated sand shell mould casting process.

 
  • 開(kāi)發(fā)了一種采用樹(shù)脂砂殼型鑄造的激冷球鐵凸輪軸。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan