以下为句子列表：
英文: Insulation: High density polyethylene or polypropylene, color coded in accordance with standard telephone industry code.
中文: 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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英文: Low density polyethylene has a crystallinity range of 65 percent, and high density polyethylene (has a crystallinity range) of 85 percent.
中文: 低密度聚乙烯的结晶度为65%，而高密度聚乙烯的结晶度为85%。
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英文: Development of high molecular weight high density polyethylene film - grade resin;
中文: 高分子量HDPE薄膜级树脂的开发
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