OBJECTIVE: to design and fabricate the poly DL-lactic acid biodegradable fusion cage of lumbar vertebrae, and to analyze the material characteristics.
目的：设计并研制聚- DL -乳酸矩形生物降解腰椎间融合器，分析其材料学特性。
OBJECTIVE: to design and fabricate the poly DL-lactic acid biodegradable fusion cage of lumbar vertebrae, and to analyze the material characteristics.
目的：设计并研制聚- DL -乳酸矩形生物降解腰椎间融合器，分析其材料学特性。
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