基本解释[能源科学技术]下封闭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。bottom impermeable layer更多例句词组短语短语bottom m impermeable layer 下封闭层bottom impermeable layer更多词组专业释义能源科学技术下封闭层