The observation also reveals that the hydroxyapatite is of layered microstructure and composed by hydroxyapatite sheets with long and thin shape and parallel distribution.

• 观察也显示这些羟基磷灰石层又是由许多羟基磷灰石片所组成,这些羟基磷灰石片具有长而薄的形状,也以平行的方式整齐排列。