For instance road construction can use the brick that set straw, poriferous pitch more, raise afforest area, at the same time laid underground permeates apparatus, those who increase groundwater superstratum to lie between water layer is osmotic.

 
  • 比如道路建設可以多采用嵌草磚、多孔瀝青,增加綠化面積,同時(shí)鋪設地下滲透裝置,增加地下水上層隔水層的滲透性。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan