导出

A parallel algorithm for certain real symmetric block-tridiagonal linear systems on distributed-memory multicomputers is proposed. This algorithm is based on the block factorization of the coefficient matrix. This algorithm is used to solving the block-tridiagonal linear systems resulted from the finite difference approximation to Poisson's equation with Dirichlet boundary conditions. Then we get a parallel algorithm which speedup tends to linear speedup.

7研究了一类实对称块三对角线性方程组的分布式并行求解，提出了一种基于块矩阵分解的高效分布式并行算法，将其应用于求解带Dirichlet边界条件的Poisson方程导出的块三对角线性方程组，得到加速比趋于线性加速比的分布式并行算法，理论上说，这也是并行算法的理想情况。

Computation formula for expecting probability is derived from simple mathematics Computation method for continuousset and discontinuous set of expecting probability, give reference and academics to personnels who are engaged in engineering hydrology design and research.

本文以简单的数学推导导出了期望概率的计算公式；给出了连续系列和不连续系列期望概率的计算方法；具有可操作性。对于从事工程水文设计和研究的人员具有一定的参考价值和学术价值。

We deduced a critical dimension for the dispersed phase.

我们从流变学理论中导出了一个临界分散相尺寸。

Derived from the database file, and then proceed to the on-screen display cycle.

详细说明：从数据库中导出文件，然后进行屏幕上的循环显示。

Base on the lumped parameter model of the torsional vibration system of crankshafts with variable inertia and considering the nonlinear elasticity force and nonlinear dissipative force, a six-degree-of-freedom nonlinear dynamical equations with parametric excitation and compulsive force are deduced.

从旋转惯量变化的曲轴扭振系统的集总参数模型出发，同时考虑了系统的非线性弹性力和非线性耗散力，导出了参强联合作用下的六自由度非线性扭转振动微分方程。

The kinetics of complexing inactivation at identical enzyme and inhibitor concentrations was analyzed and the equations of product generation were derived when the free enzyme concentration is great larger or smaller than the dissociation constant of inhibitor,〓.

在游离酶浓度远大于或远小于抑制剂的解离常数的条件下，导出了产物生成的方程。

The kinematics parameters were firstly presented by establishing the mechanical model of relation between the vibration screen and particle to deduce periodicity condition of particle motion,then disturbing function of particle motion for periodic motion was educed by using Poincaré mapping method,and studied motion characteristics of particle in vibration screening in terms of numerical analysis.

利用振动筛与颗粒之间关系的运动学模型，导出颗粒运动的周期性条件；然后利用Poincaré映射方法，推导出颗粒的运动对周期运动的扰动方程；最后对振动筛分过程中颗粒运动特性进行了数值计算研究，得出了筛面上颗粒运动是经周期分叉和概周期分叉通向混沌的演化过程。

According to the symmetry of the definition domain, a scheduling-order is defined, and a branch and bound algorithm is designed to search for an optimal solution in the scheduling-ordered sub-domain.

引入成组工作调度中的"运行"思想，提出组调整交货期的概念，导出了资源能力平衡的迭代推算方法和工作成组形成运行的规则，并设计了相应的启发式算法。

A general formula of Dopper shift is obtained from 4-dimensional wavevector transformation, and the transversal and longitudinal Dopper effect is also discussed.

利用四维波矢量变换导出了波在介质中传播的多普勒频移普遍公式，并讨论了纵向多普勒效应与横向多普勒效应。

According to the point of view of mechatronics, the modeling of the dot-matrix needle printer head has been completed by the method of electromechanics.

本文从机电一体化的观点出发，运用机电动力学方法，完成了计算机的点阵针式打印头的建模，并进行了数值模拟分析，且推导出"L"形打印头的磁路、电路和动力学方程，给出了相应的初始条件和边界条件。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。