electret

Nghĩa

A solid dielectric having a quasi-permanent charge; usually a metallized film; used in electroacoustic and electromechanical transducers and in air filters.

Từ nguyên

Blend of electricity + magnet.

Câu

Electret materials are quite common in nature .

Vật liệu Electret khá phổ biến trong tự nhiên.