求翻译：摘要 骨组织工程包括三要素，种子细胞，支架材料和生长因子，而支架材料是构建组织工程的最基本构架，羟基磷灰石是公认的骨修复的替代材料，而纳米羟基磷灰石利用纳米技术，使之具有与天然骨更为相似的结构特征，但单一的材料难以满足骨缺损修复的要求，与其他材料复合成为研究的热点，本文对纳米羟基磷灰石及其复合物在修复骨缺损的作用进行了初步的总结。是什么意思？

Abstract Bone tissue engineering consists of three elements, seed cells, scaffolds and growth factors, and tissue engineering scaffold material is the most basic structure, hydroxyapatite is recognized as an alternative to bone repair materials, and the use of nano-nano-hydroxyapatite technology, so

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Abstract Bone tissue project including three essential factors, seed cell, support material and growth factor, but the support material is constructs the organization project the most basic skeleton, the hydroxyl apatite is the substitution material which the recognition bone repairs, but a nanomete

Summary bone organization engineering including three elements, seed cell, bracket material and growth factor, and bracket material is construction organization engineering of most basic architecture, hydroxyl apatite is recognized of bone repair of alternative material, and nano-hydroxyl apatite us

Summary bone organization engineering including three elements, seed cell, bracket material and growth factor, and bracket material is construction organization engineering of most basic architecture, hydroxyl apatite is recognized of bone repair of alternative material, and nano-hydroxyl apatite us