High-densitypolyethylene and low-density polyethylene were the second and third place polymers.
高密度聚乙烯和低密度聚乙烯是在名单中排在二位和三位的高聚物。
2
Insulation: Highdensitypolyethylene 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。
3
Freshwater tank: We think the best tanks are made of thick-walled, high-densitypolyethylene, but flexible tanks can work in an odd-shaped or inaccessible space.