Based on diffraction theory a theoretical method for evaluating the three-dimensional focusing performances of the compound X-ray lenses is presented.
给出了基于衍射理论的评价X射线聚焦组合透镜三维聚焦性能的理论方法。
Three dimensional coordination polymers show self defocusing or self focusing effects depending on the valence shell structures of the central ions.
三维结构配位聚合物的自聚焦或自散焦效应主要受中心金属离子价层电子构型的影响。
Abstract : Focusing on the data lost or unavailable reference in cloud storage, a secure cloud storage method based on Three-Dimensional model (TD-model)was proposed.
本文针对云存储节点失效问题，提出了基于三维立体模型的安全云存储方法。
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