impermeability是什么意思

实用例句

1. 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。来自辞典例句

2. 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.来自互联网