Needless to say, there are enormous engineering problems to solve in converting the heat into useful energy.

 
  • 當然,要把這種熱力轉變?yōu)橛杏玫哪茉?,還有許多工程問(wèn)題有待解決。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan