It is shown that even in the room temperature phase, the lithium position should be at (2/3, 1/3, 0.706) instead of the position at (2/3, 1/3, 0.849) suggested previously by Bradley [6].

• 结合理想离子晶体模型；讨论了该晶体的结构；指出室温相Li的位置并不像Bradley所推测的；在(2/3；1/3；0.；849)的位置；而应在(2/3；1/3；