permittivity dispersion的用法和樣例：
例句
- Relative dielectric permittivity and loss angle tangent among them are the two of most important indexes.
相對介電常數和介質損耗角正切是其中的兩個重要的性能指標。 - Left-handed materials are materials that have simultaneously negative permittivity and negative permeability.
左手材料是一種介電常數和磁導率同時為負值的材料。
