单词	polyethylene
释义	polyethylene noun poly·​eth·​yl·​ene ˌpä-lē-ˈe-thə-ˌlēn  : a polymer of ethylene especially : any of various partially crystalline lightweight thermoplastics (CH2CH2)x that are resistant to chemicals and moisture, have good insulating properties, and are used especially in packaging and insulation Example Sentences Recent Examples on the Web Plastic materials such as PVC and high-density polyethylene (HDPE) are typically less expensive to purchase up front than more traditional materials such as copper, ductile iron and steel. Robin Lloyd, Scientific American, 16 Aug. 2022 The polyethylene terephthalate, (PET, a form of polyester) bottle used for water and other drinks, is light, cheap, and unbreakable compared to traditional glass bottles. Manasee Wagh, Popular Mechanics, 10 Aug. 2022 Sprite's current packaging contains green polyethylene terephthalate (PET). Gina Martinez, CBS News, 27 July 2022 Most prominent was polyethylene terephthalate (PET), a common type of plastic used in making drink bottles, food packaging and fabrics, and even lip gloss. Mike Snider, USA TODAY, 25 Mar. 2022 Service lines are commonly made of copper, iron, steel or one of several types of polyethylene or polyvinyl chloride (PVC), according to various sources. Robin Lloyd, Scientific American, 16 Aug. 2022 This cooling body pillow from Sleep Number uses a cool-to-the-touch outer material made with polyethylene and polyester, which proved to be moisture wicking in our moisture management tester in Lab. Emma Seymour, Good Housekeeping, 12 Aug. 2022 Unlike the rigid material used in water bottles, sneeze guards, toys, and covid acrylic partitions, thin plastic is made with a softer, low density polyethylene. Anne Quito, Quartz, 22 Apr. 2022 Although the green polyethylene terephthalate (PET) packaging Sprite bottles are currently made of is recyclable, because of its color, it's separated from other clear items to avoid discoloring material used to make new PET bottles. Marlene Lenthang, NBC News, 28 July 2022 See More Word History Etymology poly- + ethylene First Known Use 1862, in the meaning defined above Phrases Containing polyethylene polyethylene glycol polyethylene glycol Medical Definition polyethylene noun poly·​eth·​yl·​ene ˌpäl-ē-ˈeth-ə-ˌlēn  : a polymer of ethylene especially : any of various lightweight thermoplastics (CH2CH2)x that are resistant to chemicals and moisture and are used especially in packaging, insulation, surgical implants, prostheses, and tubing
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