Lime mortar and plaster were used on the Egyptian pyramids, on the Chinese Great Wall and for building the famous Roman roads.

 
  • 埃及金字塔,中國長(cháng)城和著(zhù)名的羅馬大道都采用了石灰灰泥。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan