这些都是固定效应模型和横截面模型。
在用横截面模型解释精确性变异的过程中，我们发现统计回归结果的解释力较弱。
In the course of using cross model to explain accuracy variation, we found that the explanation of regression result was poor.
在选择区域范围内根据油藏横截面模拟模型能进一步确认流动单位校正模型。
The revised model based on flow units was further validated by cross-sectional reservoir simulation models in selected areas of the field.
在塑性硬化强扭理论的基础上，利用双线性材料模型计算了扭杆弹簧第一次强扭过程横截面的应力和应变。
Based on plastic intensifying theory, dual-linearity material model is used to calculate stress and strain on the cross section of a torsion bar spring by FE method.
生成模型的步骤包括：横截面定义、平面设计、立面设计、单元生成。
The steps for establishing model include cross section definition, plan design, elevation design and element generation.
该模型中编织纱线具有椭圆形横截面，较已往圆形横截面的假设更接近于真实情况。
The elliptical cross-section is assumed for the braiding yarn, which is more approximate to the realistic situation of the yarn in the composites.
建立了竖直井安装扶正器的油管力学模型，给出了油管任意横截面轴力的计算方法，导出了相邻扶正器之间油管失稳的临界状态方程。
A mechanical model for installing tubing stabilizer in vertical well is established, and a method of calculating axial force in tubing is presented.
本文以肱骨横截面CT图像为解剖学基础，提取骨端面的几何形状，进行三维重建，建立肱骨的三维有限元模型。
Based on ct picture, the geometrical dimensions of humerus were obtained. A three-dimensional finite element model was established on the basis of three-dimensional reconstruction.
采用深圳证券市场交易数据对资本资产定价模型进行了横截面检验，研究了股票组合和单支股票收益率与系统风险的关系，并分析了个股风险构成。
The paper has transverse check to CAPM by using data from Shenzhen's securities, studies relations between stock group and single stock and system risk, and analyzes single stock risk construction.
为了获取三维数值化概念机模型的浸润面积和横截面积等几何特性，本文提出了一种基于离散化面元的估算方法。
To estimate the geometric characteristics, especially wet areas and section areas, of three dimensional numerical conceptual aircraft models, a method based on surface elements is proposed.
横截面固定模型？
运用个体时点固定效应的面板数据模型，构建比横截面数据模型更为真实的行为方程，并与传统的区位因素进行比较分析。
Also, the paper use an individual-time fixed panel data model to build a more real acts equation than the cross section data model, and compare with traditional factors.
运用个体时点固定效应的面板数据模型，构建比横截面数据模型更为真实的行为方程，并与传统的区位因素进行比较分析。
Also, the paper use an individual-time fixed panel data model to build a more real acts equation than the cross section data model, and compare with traditional factors.
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