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。
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。
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。
There is great obstacle for users to look up reference under network environment, therefore, professional library should develop characteristic data base vigorously.
网络环境下用户检索存在着巨大障碍，专业图书馆应大力发展特色数据库。
There is great obstacle for users to look up reference under network environment, therefore, professional library should develop characteristic data base vigorously.
网络环境下用户检索存在着巨大障碍，专业图书馆应大力发展特色数据库。
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