Nanocrystalline titania powders in the rutile phase were prepared by the homogeneous precipitation method using TiCl4 and TiCl3 as starting materials.是什么意思_Nanocrystalline titania powders in the rutile phase were prepared by the homogeneous precipitation method using TiCl4 and TiCl3 as starting materials.在线翻译_英语_读音_用法_例句