This article makes a thorough theoretical study of the insulation resistance of non-filled plastic telephone cable.
2
扼要说明了全塑市话电缆进水受潮的基本途径及其对电缆电气性能的影响，阐述了电缆排潮的两种主要方法。
The basic approaches of water ingress into all-plastic local telephone cables and the effect of water ingression on the electrical characteristics of cable are explained briefly.
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