查询词典 computation errors

The equations for the helicoid and cross section of a ballscrew are worked out and a numerical integral method for the computation of the moment of inertia of the cross section is proposed.

建立了滚珠丝杠的螺旋面方程及横截面方程，提出一种精确计算滚珠丝杠横截面惯性矩的数值积分法，计算结果表明，传统的简化方法将造成20％以上的计算误差。

The applied result shows that the new PP regression model based on particle swarm optimization and Hermite polynomial fitting is simple in use, fast in computation and effective in optimization. This algorithm may serve as a useful tool in synthetic earthquake prediction study.

通过计算和分析表明，基于粒子群优化算法与厄米多项式构建的投影寻踪回归模型具有简单、快速、有效的特点，在实际地震综合预测建模中取得了满意的效果，可作为地震预测的一种综合分析方法。

Unlike the previous method, however, the proposed algorithm obtains the new transformed matrix by taking the conjugate operation to the forward and backward spatial smoothing covariance matrix of the received data, so that the modified covariance differencing matrix which is a Hermitian matrix of zero real part can lower the computation load effectively during the eigenvalue decomposition.

不同于以前的算法，提出的算法通过对接收数据的前后向空间平滑协方差矩阵进行共轭运算得到新的变换矩阵，因此修正后的协方差差分矩阵是个实部为零的厄米特矩阵，从而有效地降低了特征分解过程的计算量。

The computation methods of the elements of Hessian matrix and the eigenvalues of Hessian matrix are discussed.

讨论了Hessian矩阵元的计算方法和Hessian矩阵特徵值的计算方法。

Net-centric warfare system is a distributed real-time system that has characteristics of independence, heterogeneousness, adaptability and synergetic, it is a great challenge to traditional distributed real-time computation.

在该网络中，各作战单元将在高速和连续的基础上共享大量的关键信息，将会大大提高海军作战的反应速度、精度和有效性。网络中心战系统是一个分布式实时系统，具有动态性、异构性、适应性和协同性，对传统的分布实时计算技术提出了巨大的挑战。

To calculate numerically the radiation of a enclosure within a heteromorphosis cavity, attention was focused on: how to decide the visibility between two surfaces, how to improve the old method of configuration factor computation, how to approximately and efficiently decide the radiation resource of directional, spectral radiation in cavity.

讨论了解决异型封闭腔辐射几何学问题的几种方法：异型封闭腔内，表面间可见性的判断方法；优化异型封闭腔角系数计算的方法；确定异型封闭腔内定向辐射的壁面辐射源的方法。计算了两种结构喷管封闭腔内的角系数，并从角系数的互换性和完整性定理验证了方法的正确性和有效性，为异型封闭腔的辐射计算解决了几何问

On the basis of forward computation arithmetic of high frequency electromagnetic method, the instrument system is designed.

在高频电磁法正演计算的基础上，完成了高频电磁法仪器系统的设计。

With high-density grid and high order difference scheme, such as QUICK, the computation can get better results.

对搅拌槽内计算结果的最终改善需要采用新的方法才能从根本上提高计算结果的准确性。

Be in nonlinear technology of science, computation and IT develop at full speed today, science home and economist together, use organize network of critical theory, nerve, artificial intelligence, genetic algorithm, muddleheaded theory, cent oneself theory and the method such as experiment of form theory, computer undertook exploration to economic complexity, got a few positive result that have important sense.

在非线性科学、计算技术和信息技术飞速发展的今天，自然科学家和经济学家一道，利用自组织临界理论、神经网络、人工智能、遗传算法、混沌理论、分形理论、计算机试验等理论和方法对经济复杂性进行了探索，得到了一些具有重要意义的成果。

In the homogeneous model, the function of tendons is assumed to be uniform in some approximated way in order to form an equivalent homogeneous material within concrete. The formulation of the homogeneous model is same with that of general FEM for common continuum, let alone the elastic matrix being resultant of that of tendon and concrete. The computation is simple, but the approximate assumption makes this method cannot be generalized, because it only represents the constitution and function of tendons in such a rough way, that the numerical results are inaccurate. In the combined model, the function of tendon is considered by the stiffness matrix with rod element, then add it into the stiffness matrix of concrete by a rational way.

均匀类单元是设想将钢筋均匀弥散于整个单元中，使其成为一种连续均匀材料单元，这种单元的与一般有限元的单元刚度矩阵推导过程一样，只不过其弹性矩阵由混凝土和钢筋两部迭加而成的，此类单元刚阵计算简明而又不会扩大计算规模，但均匀弥散只是为计算简单而作一种假想，不贴近单元构造实际，也不符合实际作用效果。

A backer of an Afghan law that critics say legalizes marital rape has rejected the international outcry as foreign meddling.

饱受批评的一项法律的拥护者说合法化的婚内暴力不会受国际舆论的干涉。

Years ago, a ancient Egyptian fleet went to the Land of punt for seeking a kind of flavor named "myrrh", and aromatic plants which has dense exotic style for the queen Hatshepsut.

3500年前的一个古埃及的舰队到&彭特之地&寻找一种叫没药的香料。