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词汇 apply medical ointment or powder
释义 apply medical ointment or powder
基本例句
敷药
To make the dressing,the researchers grind crab shells to a fine powder and mix it with chemicals to convert the base material,chitin,into chitosan.为制做敷药绷带的基层,专家们把蟹壳研磨成粉末状,又加人一些化学制剂,将基层的聚乙酸氨基葡糖转换成聚氨基葡糖。
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