NIS+ also extended the naming system so that databases were placed into a tree structure rather than a single domain, allowing for much more complicated and wider-ranging distribution.
NIS+ 还对命名系统进行了扩展，因此数据库将放入树形结构中（而不是单个域中），以便允许更为复杂、范围更广的分布。
An electromagnetic model for multilayer planar structure with single slot was built in spectral domain.
建立了带单槽孔多层平面结构场分布的谱域电磁模型。
The results show that the SEAM technique can be used directly to observe the domain structure of ferroelectric ceramics and single crystal materials without any treatment for test samples.
结果表明：利用扫描电子声显微镜技术在不对样品表面进行任何处理的情况下，可以直接对电畴结构进行观察。
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