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单词 hard plastic
释义

hard plastic

/ˌhɑːd ˈplastɪk/
noun
Originally: a substance that started in a plastic (mouldable) state and was subsequently made hard or rigid (now disused ). In later use: a plastic that is hard and rigid, such as PVC, ABS, and polymerized methyl methacrylate; plastic of this kind.

Origin

Late 19th century; earliest use found in U.S. Patents. From hard + plastic.

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更新时间:2024/12/23 9:17:07