基本解释[能源科學技術]下封閉層英汉例句雙語例句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壓水層的情況下，基坑開挖減少含水層上覆不透水層的厚度。bottom impermeable layer更多例句词组短语短語bottom m impermeable layer 下封閉層bottom impermeable layer更多词组专业释义能源科學技術下封閉層