This system used E-R chart method to design in order to minimum data redundancy and optimize data consistency and reduce updating abnormity.
本系统采用E - R图法进行规范化设计使得数据冗余最小，数据一致性好，更新异常问题不易发生。
Proposed is a new method to calculate the maximum and minimum horizontal stress using log data.
提出了一种利用测井资料计算最小和最大水平应力剖面的新方法。
The principle of statistics is used to judge abnormality of data, and a better method is further proposed to give appropriate concrete strength based on the minimum strength data and abnormal value.
研究提出运用数理统计原理进行检测数据异常性判断，在测区强度最小值和异常值的判定值中，取较大者作为构件强度推定值的取值方法。
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