An optical fiber is a dielectric (nonconductor of electricity) waveguide made of glass or plastic.

光纤是一种质（绝缘体）波导玻璃或塑料。

The study showed that the property of grain triboelectrification relates to grain moisture, friction velocity, dielectric constant and friction material.

研究表明，稻谷摩擦带与稻谷含水率、摩擦速度、稻谷常数以及摩擦材料等因素有关。

To raise ozone output of ozonator,it demands that ceramic plate materials for ozonator have good dielectric properties and quite high thermal conductivity.

为了提高臭氧发生器臭氧产量,要求臭氧发生器用陶瓷基板材料具有较高性能和热导率。

The interelectrode dielectric adopts the polypropylene film with surface coarsening which is easy to impregnate so as to enhance the reliability of high-capacity capacitor.

极间质为易于浸渍表面粗聚丙，特别提高了大容量容器可靠性。

This heating helps to break down weak spots in the dielectric that otherwise might pass through the electrode undetected, only to fail during a later spark or hipot test.

这热量帮助击穿线绝缘较地方﹐否则线材通过极而没有被检测到﹐结果在以后火花测试和高压绝缘试验将会失效。