2026-03-22 14:32 浏览次数 16
高坝
Application of the new energy dissipator of the high dam
高坝新型消能工的应用
before the high dam was built, the nile flooded every year and destroyed the fields nearly.
在大坝建成之前,尼罗河每年都泛滥,淹没两岸大片土地。