| 单词 | dielectric constant |
| 释义 | dielectric constant in British Englishnoun another name for relative permittivity dielectric constant in American English the ratio of the capacitance of a capacitor in which a particular insulating material is the dielectric, to its capacitance in which a vacuum is the dielectric dielectric constant in Electrical Engineering (daɪɪlɛktrɪk kɒnstənt) Word forms: (regular plural) dielectric constants noun (Electrical engineering: Semiconductor and electronic circuitry) dielectric Dielectric constant is the ratio of the capacitance of a capacitor with the given material as dielectric, to the capacitance of the same capacitor with vacuum (orair) as the dielectric. Substances with a low dielectric constant include a perfect vacuum, dry air, and most pure, dry gases such as helium and nitrogen. The dielectric constant of a vacuum is defined as 1, that of air is very close to 1, and all other materialshave values specified in relation to air or a vacuum. Dielectric constant is the ratio of the capacitance of a capacitor with the given material as dielectric,to the capacitance of the same capacitor with vacuum (or air) as the dielectric. |
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