2025-09-09 13:31 浏览次数 8
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。