The theoretical analysis and integrated data show that good environmental protection and economical benefit will result from generalization and effective usage of natural gas.

通过理论分析及数据归纳得出：如果能够推广和有效使用天然气，将在环境保护及经济上得到效益。

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As the nuclear part of WEB information system, database faces the double threats coming internally and externally. Thus its encryption becomes the effective means for data protection.

数据库是基于WEB信息系统的核心组成部分，面临来自外部和内部的双重威胁，对其进行加密处理，是进行数据保护的有效手段。

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In order to raise the level of protection of data privacy and accuracy of the outcome of the excavation, an effective protection of the privacy of distributed algorithms Mining Association Rules Act.

为了提高对隐私数据的保护程度和挖掘结果的准确性，提出一种有效的隐私保护分布式关联规则挖掘算法。

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