塑料合成树脂被广泛应用到各种产品中，包括电线的绝缘层。

The plastic resin is used in a wide range of products, including electrical wire insulation.

《柯林斯英汉双解大词典》

这些电线由一个塑料绝缘层缠了起来。

The wires were cabled together with a plastic tie.

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镀银，镀锡，氟塑料绝缘安装电线。

Silver , tin , plated Teflon insulated wires.

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另外，伪劣电线绝缘层看上去似乎很厚实，实际上大多是用再生塑料制成的，时间一长，绝缘层会老化而漏电。

What's more, the unqulified wire seems thick on the insulated sheath, the fact is they are made from recycled pvc, the insulation layer will aging and creepage after a period.

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另外，伪劣电线绝缘层看上去似乎很厚实，实际上大多是用再生塑料制成的，时间一长，绝缘层会老化而漏电。

What's more, the unqulified wire seems thick on the insulated sheath, the fact is they are made from recycled pvc, the insulation layer will aging and creepage after a period.

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