permittivity

n.[电]介电常数,电容率

介电常数；电容率

名词

1、The permittivity of a material determines its ability to store electrical energy in the form of an electric field.
材料的介电常数决定了它存储电能的能力，以电场的形式存在。
2、The permittivity of air is approximately equal to that of a vacuum.
空气的电容率大致等于真空的电容率。