可计算地

An advanced branch and bound method which reduces the computer resolving time enormously and leads the reliability research of large-scale spatial frame structural systems close to practical use is presented on condition that the same computation accuracy is ensured.

导出了大型空间刚架结构系统某梁元断面达到塑性屈服极限时的修正刚度矩阵和相应的等效节点力向量；提出了在保证同等计算精度的条件下，可成倍地减少运算时间的改进分枝限界方法，使大型空间刚架结构系统的可靠性研究向实用化迈进；本文开发出可自动生成失效衡准，自动选择主要失效形式，追踪失效过程的计算机程序。

The users should be easy to submit single computing task or parallel computing task, monitor the state of running task, and realize disk sharing and remote printing through user console of grid.

通过网格用户控制台，用户可方便地向网格提交单一计算作业和并行计算作业，监测作业运行状态，实现磁盘共享和远程打印。

The powerful function of a new computer language MATLAB, produced by the America Mathworks company, is the mathematical software system for the calculation in science engineering. It can efficiently solve problems in science and engineering such as numerical linear hypercomplex system, digital approximation, optimization, numerical quadrature etc. It also has characters of beautiful interface and convenience for users.

MATLAB是Mathworks公司推出的适用於科学和工程计算的数学软件系统，可高效地解决数值线性代数、微分方程数值解、数值逼近、最优化、数值积分等科学和工程问题，且具有可视化图形处理、使用方便、开放式多功能於一体的新一代计算机语言。

The computational results show that the assumptions of incompressible water and massless foundation can considerably simplify the complexity of equations and cut the amount of computation, but cause little errors.

计算结果分析表明：在高拱坝流固耦合动力分析中，水体不可压缩和无质量地基假定可显著地消减方程复杂度和计算工作量，但带来的数值误差较小。

Under this optimized design method, the strength of calculation was movably cut down and a primary preview could be obtained.

该方法可明显地减少设计时的计算工作量，且可对设计结果进行初步的预测。

In addition, total wheel/rail contact calculation with divided rail outline method are raised. Under the condition of considering the displacement, bouncing, yaw, roll of wheelsets and displacement, bouncing, roll of rails, minimum gap between rail and wheel were calculated by the trochoid method and divided rail outline method, we can easily judge totally real contact states of the wheel/rail such as normal one-point contact, nonnormal one-point contact, two-point contact and wheel complete lift. Wheel/rail normal forces in the two contact point are respectively calculated by nonlinear Hertz contact theory, and then, result of simulation more close to reality on actual track.

另外，提出了轨廓分区法全面计算轮轨接触状态法，在考虑轮对的横移、浮沉、摇头、侧滚和左右钢轨的横移、浮沉、侧滚的条件下，可全面地分别计算左右侧轨顶和轨侧区域与车轮的最小轮轨间隙量，以此来判断轮轨的真实接触状态：正常的一点接触、非正常的一点接触、两点接触和车轮完全悬浮，并根据非线性赫兹接触理论分别求得两接触点处的轮轨法向力，从而使仿真结果更接近于车辆在实际线路上的运行状态。

The relative error of water level is less than 1%. In contrast with common method, the Monte Carlo method is more flexible. The nodes of river networks can be numbered unrestrictedly. The node number is not limited in computation.

实际计算中，蒙特卡罗方法较目前常用方法灵活，对节点数量和编号无要求，可方便地加支或减支，计算程序也很简单。

Simulation experiments' data show that by using this methods it can precisely generate non Gaussian correlate random sequence with specified probability density and power spectrum,and reproduce verisimilarly the scatter coherent video signal of radar sea clutter containing both amplitude and phase.

其中迭代算法用来计算非线性变换过程中高斯序列相关性的变化，而随机向量法用来完成线性变换，仿真实验数据证明利用这种方法可精确地产生具有指定概率密度和功率谱的非高斯随机序列，逼真地复现既包含振幅又包含相位的雷达海杂波相干视频散射信号。

The semi-rigid wake model and the present calculation method were used to study two wind turbines in the wind tunnel, it was concluded that the results were closer to experiment data than that from the element/momentum theory, and aerodynamic performance of HAWT can be analyzed precisely, in particular, in the range of high tip speed ratio.

对两个风洞中实验的风力机模型进行了计算，结果表明，利用所给出的模型和计算方法比叶素/动量理论更加接近实验数据，并且在较大尖速比范围内可精确地分析水平轴风力机的空气动力特性。

The Excel program for calculating pulp and white water equilibrium at fourdrinier paper machine was provided in this paper.

提供了一种用Excel计算长网造纸机浆水平衡的程序，用此程序对造纸机部分进行浆水平衡计算，快速、准确，并且可方便地调整有关参数。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。