In order to improve the input-output efficiency, putting forward a shelves optimization method of shelves equivalent principle, and based on the method, coming up with spiral sequence principle.

随后，通过对仓库库位号与堆垛机运作效率关系的分析，提出库位等效思想，并在此思想上提出库位螺旋排位法，初步建立库位优化模型。

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Then fast spiral echo sequence was used to get weighted T2WI images and the images were reconstructed with MIP(maximum intensity projection).

然后用快速自旋回波重T2 WI加权序列扫描，图像经最大密度投影法重建。

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