比ひ誘ゆう電でん率りつ

noun

dielectric constant; relative permittivity

Technical term in physics and electrical engineering. 'Specific inductive capacity' is an older synonym.

• この材ざい料りょうの比ひ誘ゆう電でん率りつは約やく4.5です。

  The dielectric constant of this material is about 4.5.