以下为句子列表：
英文: A kind of multi level model of clock binary tree and its construction algorithm of clock signal based on multi-level genetic algorithm were proposed.
中文: 摘要阐述了芯片的版图设计中形成时钟二叉树的多级遗传算法，从理论上说明了该遗传算法的求解思路、编码方式、适应度函数、遗传算子的设计等。
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英文: A model-based recommendation algorithm was proposed, which uses Multi-level Association Rules (MAR) to alleviate those problems about data sparseness and scalability of the recent recommendation algorithm.
中文: 摘要提出一种基于多层关联规则(MAR)的推荐算法，着重解决目前推荐算法的稀疏性问题和可扩展性问题。
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英文: A multi-level risk assessment model is built by using entropy theory, and multi-stage risk fuzzy evaluation method in this paper.
中文: 基于信息熵理论，基于模糊评价方法，提出改进的项目风险模糊评价模型，并结合某一大型工程项目的风险评价，进行了实证研究。
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英文: A novel three-level AC chopper is proposed, which is a new multi-level converter applied to high voltage conversion, and utilizes more electric levels to form output voltage and decrease the harmonic content of output waveform.
中文: 摘要提出一种用于高压电能变换的新型三电平交流斩波电路，该电路允许使用低电压等级的器件完成高压电能变换，并采用较多的电平数去逼近所希望的波形，使输出电压或电流的质量大大提高，谐波含量减少。
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英文: Application of high-effective intelligent route planning method, solve the complex path route plan in the multi-level crossing bridge, the specific line, has endured the good line, the high structure road, the auxiliary road and so on.
中文: 采用高效的智能路线规划算法，解决了立交桥、单行线、禁行线、高架路、辅路等复杂道路的路线规划问题。
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