Authors present a technology for inverse deduction of OD matrix based on VISUM, and give a detailed account of the technology's key principle and application.

提出了基于VISUM仿真软件的O - D矩阵反推技术，就该技术的核心原理与实施应用给予详细的阐述。

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Some ordinary forms of sparse matrix and the application of sparse matrix technology in astrometric and geodetic VLBI data analysis are introduced.

介绍了稀疏矩阵的四种常见形式以及稀疏矩阵技术在天测与测地VLBI数据处理中的应用。

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This paper presents the current situation of the technology research and application of resin matrix composites in China.

本文从成型工艺、应用领域等方面阐述了我国树脂复合材料的研究现状。

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