The stepped spillway is interested by engineers due to its excellent function of energy dissipation and aerification.

 
  • 臺階式溢洪道因其顯著(zhù)的消能、摻氣效果而倍受工程界的關(guān)注。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan