relative permittivity

for a substance, the ratio between its permittivity and the permittivity of vacuum

Japanese Meaning

物質の誘電率と真空の誘電率との比（相対誘電率）

The relative permittivity of the new polymer was measured to be higher than anticipated, affecting the capacitor's performance.

新しいポリマーの比誘電率は予想より高く測定され、コンデンサの性能に影響を与えた。

Sense（1）

for a substance, the ratio between its permittivity and the permittivity of vacuum

relative permittivities

（ plural ）