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单词 polyurethane
释义

pol.y.ur.e.thane
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n [U]
a plastic used esp. as a type of VARNISH (= substance which protects wood or paint) or as a protection for delicate objects
聚氨基甲酸乙酯,聚氨酯

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更新时间:2025/8/11 4:38:24