Migration velocity analysis is one of the key steps in pre stack depth migration whose accuracy directly affects the quality of pre stack depth migration.
偏移速度分析是叠前深度偏移的关键步骤之一，它的准确与否直接影响叠前深度偏移的质量。
Through analysis of newspaper pre-press, such as color composition, image scanning and color separation, imposition, proofing and other technology impact the quality of the newspaper.
通过分析报纸印前制作如彩色排版、图像扫描与分色、拼版、晒版等工艺对报纸质量的影响。
On the pre- mise of analysis of element quantities, quality and distribution, the whole car body is meshed by using shell element in order to establish the detailed model for FEM analysis.
分析了单元数量、质量、布局的前提下，用壳单元对整个车身进行网格划分，建立了详细车身有限元模型。
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