查询词典 numerical computation

Polar decomposition of deformation gradient in three dimensional states is often rather difficult, although it has already been solved success fully for plane problems. It is a commonly used technique to obtain the solutions through Cayley-Hamilton formula and three invariables of U. The paper introduces a nonlinear elimination method by use of orthogonal matrix's property, and gives a computation formula for polar decomposition.

变形梯度的极分解在平面问题中得到了很好解决，在三维空间问题中一直认为是相当困难，利用Cayley-Hamilton公式和U的三个不变量求解是目前普遍采用的方法，文章利用正交矩阵的特性，介绍了非线性逐次消除的方法，给出了右极分解的计算式。

Three methods for the computation of the isotropic tensor function,spectral decomposition method,eigenprojection operator method and representation theorem method,are compared.Different approaches to calculate the eigenvalues and their corresponding eigenvectors are also discussed.As an example,the exponent tensor function is calculated.

对计算各向同性对称张量函数的3种方法(谱分解法、特征投影算子法和表示定理法)进行了分析比较，同时也对如何计算特征根与特征向量的技巧进行了探讨，并利用3种方法对指数张量函数进行了实例计算。

According to the number decomposition theorem in number theory, using the above algorithms proposed, a new fast algorithm for computation of composite length DCT is constructed.

根据数论关于数的分解定理，提出了一种新的任意复合长度DCT的快速算法。

Chinese official claims to compared the GDP 1978 to break up as a result decuple, and the economic growth that economist of a few international believes China is in actually on most circumstance leaves the century between 90 time and this century is to be underestimated, because the growth of very much private company fails,complete computation goes in.

中国的官员声称结果比1978年的GDP翻了十倍，而一些国际经济学家相信中国的经济增长实际上在上世纪九十年代和本世纪之间多数情况下是被低估了，因为很多私人企业的增长没能完全计算进去。

Proposed methodology for estimating the ratio of on-chip computation time to off-chip access time can be applied on defacement platforms. On our experiment platform, average error of estimations is less than 8%.

修改并发展出一套完整的方法论，在不同的平台下都可以用类似的方式来估算记忆体存取时间以及处理器计算时间的比例，其误差在本论文的实验环境下小於8%。

Weight degeneracy is a grievous defect for particle filter which result in wasting large computation cost.

基本粒子滤波的"退化"现象是其存在的一个严重缺陷，它导致大量计算资源浪费。

Degree-day factor is an important parameter of degree-day model which is a widely used method for ice and snow melt computation.

：在冰川与积雪消融研究中，度日模型应用较为广泛，该模型是基于冰雪消融与气温，尤其是正积温之间的线性关系建立的。

The procession is theoretical analysis, demonstrational analysis,simulative computation and then getting the conclusion.

分析的思路是：理论分析-实证分析-模拟计算-结论。

In such computation, the whole sequence DNA molecules are involved in every operation of denaturalization and re-denaturalization, hence the number of experiment steps is important to the computing results of model.

在这样的计算中，每一步变性与复性都涉及到整个序列的DNA分子，因而操作步骤的次数对该模型的计算效果显得尤为明显。

This method requires only the dimensions of systems and the expansion coefficient of density matrix which can be easily got, and the computation is easy, so it has its application value.

此判据仅依赖于系统的维数和密度矩阵的展开系数，而这些数据是易于求得的，使得量子纠缠态的判断简单易行且易于操作，在实际运用中具有理论价值。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。