基本解释不透水层英汉例句双语例句The equilibrium between gravity of the upper impermeable stratum and water pressure is a common calculation method for anti-uprush of foundation pit.在基坑抗突涌分析中，用上覆土层的重力来平衡水压力是一种常用的计算方法。impermeable stratum更多例句词组短语短语impermeable rock stratum 不透水岩层impermeable stratum更多词组