单词 | polythene |
释义 | Word Frequency polythene(ˈpɒlɪˌθiːn) noun any one of various light thermoplastic materials made from ethylene with properties depending on the molecular weight of the polymer. The common forms are a waxy flexible plastic (low-density polythene) and a tougher rigid more crystalline form (high-density polythene). Polythene is used for packaging, moulded articles, pipes and tubing, insulation, textiles, and coatings on metal Systematic name: polyethene. Also called: polyethylene |
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