两维的

Because the equation is a various coefficients second-order parabolical partial differential equation,explicit difference formats usually have high condition for stability. Implicit difference formats have good stability,but they must calculate a set of algebraic equations,which are too complex.

由于泥沙扩散方程是一个二维变系数的抛物型方程，对于多维的方程，显格式往往稳定性要求很高，而隐格式虽然稳定性较好，但它要解大型的代数方程组，工作量也非常大，为了克服这两种格式的不足，常用ADI法求解，但仍存在一些计算量偏大等不足之处，因此构造出更好的差分格式是有必要的。

Part five analyze the "separatism from America" road and draw the conclusion: on one hand, Marcus Garvey's separatism road was the product of the Afro—American's hard lives; on the other hand, it wouldn't come into reality under the circumstance of his days.

第五部分：以加维的"脱离美国"道路为中心，从其客观环境和可行性两个角度进行分析，得出结论：加维的"脱离美国"的道路虽然是当时美国黑人艰难处境的产物，但在当时的条件下是无法实施的，不能从根本上解决美国黑人问题。

In the paper, analytical continuation of Sommerfeld integrals is discussed rigrously, with poles, branch points and branch cuts of the integrand tanken into account.

以两半无限大空间中两维问题为例，计算了埋地柱体的本征值，并探讨了埋入深度及大地电导率对本征值的影响。

There is no evidence that the two actually met before Octavius was in his mid-teens, but that the dictator noticed Octavius is hardly to be doubted.

没有证据显示这两人的见面发生在屋大维15岁左右的时期，但是凯撒已经注意到屋大维是毫无疑问的。

The total of 36 compounds were characterized by X-ray single crystal diffraction, EA, TG, IR, luminescence, adsorption, XPS, powder XRD, M〓ssbauer spectra, EPR, magnetical measurements.

本论文利用水热法，成功设计和合成出三个系列Ln-M(M=Mn〓，Fe〓，Ag〓)共23个未见文献报道的稀土—过渡混合金属配位聚合物，同时也得到了结构新颖的仅含稀土或两种不同过渡金属的从一维到三维的聚合物13个，并对它们进行了结构、元素分析、热重分析、红外光谱、荧光、吸附、磁性、光电子能谱、粉末衍射和M〓ssbauer谱等表征。

It identifies those communities by way of the multidimensional eigenvectors of network's connection matrices, and then the effects of key parameters on the division results are analyzed through simulation so as to determine the parametrical values which make sure that the results of division are optimum.

利用网络连接矩阵的多维特征向量划分网络社团，通过仿真实验分析关键参数对划分效果的影响，从而确定使得划分结果最优的参量值，并综合多维特征量阈值和社团数目两方面的因素决定被划分的社团数目。

Since symplectic algorithms were brought forward by Kang Feng, two overflying developments took on: one is the generalization from finite dimensional Hamiltonian system to the infinite dimensional, the other is the generalization to multisymplectic algorithms.

自从冯康院士提出辛算法以后，这一算法有了两次大的飞跃和发展，一次是从有限维向无限维的推广，一次是向多辛算法的深入发展。

The corres- ponding computer program is also developed and has been used to work out a series of problems with satisfactory results.

文(8)建议最小二乘意义下的近似方法，目的是使连接点处两单元轴向位移差的平方泛函取极小，但是对二维及三维的薄壁杆件体系

For when Pope Hadrian IV had died in 1159, the cardinals elected two popes together, namely Roland of Siena, who took the name of Alexander III, and Octavian of Rome who though he was nominated by fewer cardinals, nevertheless with the support of the emperor Frederick usurped the name of Pope Victor IV.

时，教宗哈德良四死於1159年，两名枢机主教当选为教皇在一起，即罗兰锡耶纳，谁的名字了亚历山大三世和屋大维的罗马尽管他是谁提名的少红雀，不过的支持下，皇帝弗雷德里克篡夺教皇的名字维克多四。

Suetonius Aug.

没有证据显示这两人的见面发生在屋大维15岁左右的时期，但是凯撒已经注意到屋大维是毫无疑问的。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！