In this article, the principle of DDS is reviewed at first, then its new application in low field nuclear magnetic resonance core analyzer is discussed in detail.
文章首先介绍了DDS的原理，然后就其在低场核磁共振岩心分析仪中的应用进行了详细的讨论，对应用效果进行了总结。
By testing, homogeneity of magnetic field, magnet stability in temperature, integral stability is good. Magnet can create a proper a uniformity region for NMR core analyzer.
通过磁体的测试，可知磁体的均匀度、磁场场强的温度稳定性、磁体的总体稳定性良好，完全可以给核磁共振全直径岩心分析仪营造一个合适的匀场环境。
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