In designing the earth rock dam with clay core wall, the exit height of side phreatic line at the downstream of core wall is of great importance to the designers.是什么意思_In designing the earth rock dam with clay core wall, the exit height of side phreatic line at the downstream of core wall is of great importance to the designers.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句