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单词 polyvinyl acetal
释义

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polyvinyl acetal
polyvinyl acetal n. any of a class of synthetic resins prepared by condensing polyvinyl alcohol with an aldehyde, sometimes spec. acetaldehyde (ethanal), and mainly used in safety glass and in lacquers and paints; cf. polyvinyl butyral n. at sense 1e.extracted from polyvinyln.
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更新时间:2026/6/1 16:24:10