分析表明：单位质量灵敏度和质量块的形状关系甚小，而和共振频率的关系较大。
The analysis indicates that the sensitivity on a unit mass is nearly independent of the shape of the mass block, whereas it is more dependent on the resonance frequency of that block.
最后，本文以一种小型核磁共振成像装置作为实例，并与有关单位合作，用实验对优化方案进行了验证，证明了本文提出方法的有效性。
At last, the experiment for the mini-device of NMR imaging, which is finished together with the relative company, proves the efficiency of the optimized schemes of pole shape presented in this thesis.
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