Unusual cracking of seamless phosphorus-killed copper pipe usedin refrigeration are analyzed by means of SEM etc.

 
  • 用SEM等方法對電冰箱壓縮機用磷脫氧無(wú)縫銅管異常斷裂進(jìn)行了分析。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan