While that is a great tool if you are writing a dissertation, Zotero is a great choice for less extensive research projects - and it's free.
如果你只是写论文，而没有进行大范围的研究，而需要一个好的工具助你一臂之力时候，zotero将是你的上乘之选-而且它是免费的。
This dissertation discusses the theory and realization of the Probabilistic Context Free Grammar-based syntactic parser.
本文论述了基于概率的上下文无关语法的句法分析的原理及实现过程。
The major research works completed in this dissertation includes: six free-degree swing platform system design, kinematics theory, pose error analysis and control methods.
本文主要对六自由度摇摆试验台的系统设计、运动学理论、位姿误差及控制方法四方面进行分析和研究。
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