# impermeability ##### 词义 - #词性/n 抗渗性；不透水性；气密性；防水性 ##### 例句 - Air-entraining agent increases impermeability of hybrid fiber concrete . - 引气剂有助于提高混杂纤维混凝土的抗渗性。 - Study on effect of ecological fiber upon improvement of impermeability of concrete - 生态纤维对混凝土抗渗性的影响及增强效果研究 - Foam has a robust and independent foam connection , water absorption in less than 25 % . impermeability . - 发泡有强韧而独立的发泡连接，吸水率在25%以内。具有防潮、抗渗性能。