The data query method and the data query device can reduce the time complexity of the data query of the system and improve the utilization rate of the system resource.

采用本发明可以降低系统的数据查询时间复杂度，提高了系统资源的利用率。

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Constructing environment-friendly and resource-saving society require the enterprises to save energy and reduce emission, improve resource utilization rate in the production process.

建设环境友好和资源节约型社会，要求企业在生产过程中节能减排，提高资源利用率。

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