They found out that even a very thin sheet of this three-ply metal was not damaged by corrosion after five years.

 
  • 他們發(fā)現即使是極薄的“三層合金”板泡上五年也不會(huì )腐損。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan