There is the permittivity vacuum. It is all up there.
这儿还有真空中的介电常数，看，全在这里。
This is the permittivity of vacuum.
真空中的介电常数是。
Epsilon zero is the permittivity of vacuum.
0是真空中的介电常数。
The theory and method of measuring the electrostatic force and the permittivity of vacuum in parallel plate capacitor by electronic balance are introduced.
介绍了用电子秤测量平行板电容器两极板间的静电力和真空电容率的原理和方法。
The theory and method of measuring the electrostatic force and the permittivity of vacuum in parallel plate capacitor by electronic balance are introduced.
介绍了用电子秤测量平行板电容器两极板间的静电力和真空电容率的原理和方法。
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