其他气体也可以穿过聚合物薄膜 ， 但是它们的电介质常数和水蒸汽 的电介质常数相比可以忽略不计 （80 >> 2….3） 。

Other gases can also penetrate the polymer film, but their dielectric constant is negligible compared to water vapour (80 >> 2…3).

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对于电介质来说，它是介电常数和介质损耗角的正切的乘积，这是对出现在电介质中的热效应的量度。

Of a dielectric the product of dielectric constant and the tangent of its dielectric loss Angle; a measure of the heating effect which occurs in dielectrics.

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通过自制的专用电容器，采用电容测量仪测电容的方法，在物理实验中开设液体电介质的相对介电常数的测量实验。

This article introduces a method to measure the relative dielectric constant of liquid dielectrics in physical experiments, with a special capacitor made by ourself.

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