文中首先总结按行划分和按列划分的并行矩阵向量乘法在原理上的异同。
First summarizes the differences on principle between two kinds of parallel algorithm of matrix-vector multiplication, namely, divided by row and divided by column.
本文中，我们首先对与复制技术有关的研究成果进行了总结。
In this thesis we first present a review of current and past research on replication techniques.
本文首先对文中的重点概念进行了界定，梳理和总结了相关的理论，综述了国内外的研究成果，在此基础上展开研究。
Firstly, define the important concepts in the study, collate and summarize the relevant theory, review the research results at home and abroad which as the basis of this research.
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