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All HA's showed a loose spongy structure with a large number of internal Spaces.
所有腐植酸都有疏松的海绵结构，同时有大量的内部空间。
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The granules of material were found on the Haversian lamella 8 months after operation. The typical structure of spongy bone formed.
八个月后，在哈弗氏骨板上出现材料颗粒，形成典型的松质骨结构。
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