单词	polyethylene
释义	polyethylene /ˌpɒlɪˈɛθɪliːn / noun Another term for polythene.Examples of linear polymers include polyethylene, polyvinyl chloride and polypropylene.... Synthetic resins are made by man using modern chemical technology such as the polyethylene and polystyrene used for cosmetics, packaging, etc. The film is based on a combination of nanoscale crystals developed using technical waxes and a polymer such as polyethylene or polypropylene.
随便看	media mail media man media market media mix median median artery median eminence median lethal dose median line medianly median nerve median plane median strip mediant median valley median vein median wasp mediaocracy media person media room media-savvy mediascape media-shy mediaspeak media star

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