The vitrifying technology and testingresults of the decorative glass made from this silty sand are discussed in this paper and the preliminary analyses of theeconomic benefits are also presented.

 
  • 本文介紹了粉細砂玻璃的?;に嚭驮囼灲Y果,并對其經(jīng)濟效益進(jìn)行了初步分析。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan