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Usually made of wood, iron or some substitute material.
通常由木头、铁或某些替代材料制成。
youdao
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Objective: To investigate the biocompatibility of chitin as bone substitute material.
目的：观察几丁质作为植骨材料的生物相容性。
youdao
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Objective: To investigate the biocompatibility of chitin as bone substitute material.
目的：观察几丁质作为植骨材料的生物相容性。
youdao