外推法

Creep properties of BB503 steel, STE355 steel and SM41CN steel are studied by creep test. With the creep test data the surplus-life prediction of BOF shell has been completed by using"θ-Concept Project"method.

对宝钢自产BB503钢、STE355钢以及2#转炉现役炉壳SM41CN钢的蠕变特性进行了试验研究，在对蠕变数据外推的基础上，使用"θ—Concept"法对宝钢2#转炉现役炉壳的残余寿命进行了预测分析。

E. new extrapolation value s of finite element solutions on the first two level grids are used to provide the good initial value s on the third level grids and then an exacter finite element solution can be obtained by several CG-iterations.

摘要提出一种求解大规模有限元方程组的新外推多网格法，即用前两层网格上有限元的新外推值提供第3层细网格上的好初值，然后用几次CG-迭代能得到较准确的有限元解。

At the same time the thesis mainly applied the factorization method, trend out-push model and other related models of the industrial structure theory in the quantitative analysis. As for the compute process, SPSS13.0 statistics analysis software and Excel 2003 application statistics software were preferred.

在定量分析过程中，主要应用了因子分析法、趋势外推模型以及与产业结构相关的其它模型，计算过程主要以SPSS13.0统计分析软件和Excel 2003应用统计软件为主。

Creep tests of P91 base material and its welds have been carried out,the creep behavior of P91 studied and creep rupture strength extrapolated by the Isothermal and the L-M parameter methods,followed by creep life estimations of P91 fresh steam pipes.

对P91钢母材和焊接接头进行持久试验，研究P91钢的蠕变特性，采用等温线法和L-M参数法对持久强度进行外推，进而对P91钢制主蒸汽管道的蠕变寿命进行估算。

Taking two sequential time satellite images and dividing them into 32 × 32 pels subset, and obtaining the optimization matching region by using of cross-correlation analysis, the cloud cluster motion vectors were estimated according to the location and time interval of the images fitting region.

选取连续两个时次的卫星云图，采用交叉相关法计算获取两幅云图的最佳匹配区域，根据前后云图匹配区域的位置和时间间隔，确定每个图像子集的移动矢量，并进行相应的客观分析；随后，基于检验后的云图移动矢量集，利用后向轨迹方法对云图作短时外推预测。

There are no conductions about the obvious form and the error equation of Romberg's quadrature formula in present literatures.

然而现有的文献并没有给出其显示Romberg公式，给实际应用带来了诸多不便，也没有介绍Romberg公式具体的误差等式，只给出了阶数[1][2][3]，下面给出显示Romberg公式和误差等式。1显示Romberg公式的具体形式在现有的文献中，Romberg公式是借助于误差的事后估计法或Richardson外推加速法得到的，而且有结果6364211R=C？

A theoretical analysis was performed on a double extrapolation method to determin the intrinsic ionization constant of the amphoteric surface of colloid particles possessing the permanent charges.

采用双外推法，从理论上分析了带永久电荷的两性表面的胶体粒子的固有络合平衡常数。

Methods The ionization constant was determined with acid-basle titration in acetone/water solutions with different ratios, the pH at half neutralization point was regarded as pKa, the value to infinite diluted in pure water was explored and the lgP was determined with bottle-shaking method by HPLC.

方法采用酸碱滴定法测定各不同体积比的丙酮-水溶液中药物半中和点时的pH值作为药物在该体积比的丙酮-水溶液中的pKa值，再外推至纯水中药物浓度无限稀释时的pKa值；采用HPLC配合摇瓶法测定药物的分配系数。

In palaeontology, the ability to explain historical observations by extrapolation from micro to macro-evolution is proposed.

在古生物学中，有人提议通过从微观进化到宏观进化的外推法来解释历史性观测。

Extrapolation Method, composed of Aitken Extrapolation and eigenvalues-based algorithm mainly, can notably reduce iterations commonly .

外推法是减少PageRank算法迭代次数的有效方法，而Aitken Extrapolation算法和基于特征值直接求解的算法是其典型代表。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。