Insulation: High density polyethylene or polypropylene, color coded in accordance with standard telephone industry code.

绝缘材料：高密度聚乙烯，按照全色谱标准标明绝缘线的颜色。

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Insulation: High density polyethylene or polypropylene, color coded in accordance with standard telephone industry code.

绝缘材料：高密度聚乙烯，按照全色谱标准标明绝缘线的颜色。

youdao