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基于量子不变量构造定理，简化地导出和扩充了Lewis和Riesenfeld的结果．指出所谓的Lewis-Riesenfeld相位一般没有物理意义；为了使其有物理意义，不变量必须取特殊形式．文中给出了这种形式．以磁场中的自旋系统为例，作了具体讨论．Based on the construction theorem of quantum invariant,the results of Lewis and Riesenfeld are rededuced in a much simpler way and extended significantly.Meanwhile,it is pointed out that the Lewis Riesenfeld phases are in general not of physical meaning unless the invariants take specific forms which have been worked out.As an example,the spin system in a magnetic field is discussed in detail.
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