Wavelength refinement 誰能幫忙翻譯一下？.

Wavelength refinement: Dielectric and permeable materials influence the wavelength of the electromagnetic fields. With this setting, the mesh density for the affected structures will be adjusted according to this effect
Low frequency refinement: The mesh density is set depending on the material parameters. Higher permittivity or permeability leads to moderately finer meshes. Prefer this option in case that high dielectric / permeable materials are involved if you want to avoid an unnecessarily fine mesh.

誰能幫翻譯一下,并解釋一下,具體條件的使用,如果介質電常數(shù)比較高(介質諧振器,在自由空間當中,平面波激勵仿真)用那個?
謝謝！

自己查查詞典久可以了哈