Riprapping is a common project measure in embankment blanket.It has many advantages: it can use local materials and carry construction in water with good effect but lower cost.

 
  • 拋石是堤防護腳中常用的工程措施,具有就地取材、可帶水施工、工程造價(jià)低、防護效果好等諸多優(yōu)點(diǎn)。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan