In the course of construction of main dam foundation drainage holes for Baise Multipurpose Dam Project,few drainage holes had seen abnormal high drain discharge.

 
  • 百色水利樞紐主壩壩基排水孔在施工過(guò)程中,少數排水孔出現排水量偏大的異常情況。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan