Result The main ingredients of PDB was hydroxyapatite,its protein was only on fifth,and it had natural pore system which possessed pore network system of original bone.是什么意思_Result The main ingredients of PDB was hydroxyapatite,its protein was only on fifth,and it had natural pore system which possessed pore network system of original bone.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句