这个词是什么意思？
A vinyl polymer made from ethylene. It can be branched or linear. Branched or low-density polyethylene is tough and pliable but not to the same degree as linear polyethylene. Linear or high-density polyethylene has a greater hardness and tensile strength. Polyethylene is used in a variety of products, including implants and prostheses.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D020959 · MeSH 2026。
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