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这种是六面体的非结构网格吗？这个喷嘴和筒体上半部像是两个body，筒体上半部和下半部节点合并的又这么好，请教下各位大佬这两个图的上半部分是不是非结构化网格？ 
第一个是六面体的非结构网格 第二个看不到内部，看起来像是四面体
