词典释义：
双语例句
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The results showed that the product was grafted copolymer of cellulose acetate and poly(actic acid), and poly(actic acid) side chains were detected in the copolymer.
结果表明， 共聚物中存在聚乳酸支链，产物为纤维素醋酸酯与聚乳酸的接枝共聚物；