Conclusion "Management method of five steps" is the best way to improve quality of CT.

结论：CT质量综合五步管理是提高CT质量管理的较佳方法。

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Using IDEF1X method, taking military system of imaging reconnaissance satellite as a research object, the paper gets the data model according to the five steps of model making.

利用IDEF1X方法，以成像侦察卫星军用系统为研究对象，按照模型设计的五个步骤，实现了其数据模型的构建。

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The prediction method includes five sequential steps of shear wave velocity estimation, fluid substitution, attribute optimization, attribute classification and reservoir prediction.

该方法操作步骤包括横波速度预测、流体替换、属性优选、属性分类和储层预测等。

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