基本解释[土木建筑工程]上覆含水层英汉例句双语例句When confined aquifer under the bottom of the pit, the foundation excavation will reduce the thickness of overlying impermeable layer.在基坑底部以下存在承压水层的情况下，基坑开挖减少含水层上覆不透水层的厚度。overlying aquifer更多例句专业释义土木建筑工程上覆含水层