dielectric tangent; loss tangent
Technical term in electrical engineering; also called tan δ. Used to describe dielectric loss in insulating materials.
The dielectric tangent of this material varies with frequency.
誘電率 is permittivity, a measure of how an electric field affects a dielectric material. 誘電正接 is the loss tangent, indicating energy dissipation.
Compound of 誘電 (dielectric) and 正接 (tangent), a calque from English 'dielectric tangent'.