短语词组短语absorbable screw fixation 可吸收螺钉固定术PDLLA absorbable screw PDLLA 可吸收螺钉Absorbable screw internal xation 可吸收钉内固定Absorbable screw and rod 可吸收螺钉;可吸收钉棒absorbable inner fixation screw 可吸收内固定螺钉 返回 absorbable screw