Sedimentary environment and its evolution, distribution of sedimentary facies and sand bodies are discussed on the base of the data of log, drilling and c, o isotope.

本文利用测井、钻井和C、O同位素等资料，研究了核二段各砂组沉积时期的沉积环境、相带分布、砂体展布以及沉积演化规律。

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Saving data in JFFS2 file system runs simply, which is more suitable to embedded environment compared with traditional data-base.

JFFS2文件系统保存数据简单快捷，占用空间少，跟传统的数据库相比更适应于嵌入式环境。

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The function, structure, development running environment and establishment method of "The system of monitoring data processing and predicting ana alarm of deep base pit engineering" are introduced.

介绍了“深基坑工程监测数据处理与预测报警系统”的功能、结构、开发运行环境及其建立方法。

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