evolution of spin state 自旋态演化
For the needs of spin machine, a lot of foreign varieties were introduced, and promoted a great leap of variety evolution.
为适应新的机械纺织的需要，国外优良品种被大量引入，促进了品种进化的一次飞跃。
A method used for describing the evolution behavior of AX spin system under multipulse sequence is introduced.
本文提出了一种用于描述多脉冲作用下ax自旋系统演化行为的相干图方法。
In particular, with time evolution, distribution and swing of the mean spin direction is closely related to the structure of the space where the initial coherent state centred in.
特别是随着时间的演化，系统的平均自旋方向的分布和摆动也与初态所处的空间结构有着密切的联系。
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