查询词典 finite difference approximation

The three-dimensional finite element model of guided wave in the pipe was built by the finite element method.

利用有限元方法建立管道导波3-D模型，通过在管道中激励纵向超声波，模拟导波在管道中的传播形态。

Each clause contains one finite verb , so if we know the number of finite verb s we know the number of clauses

每个子句含有一个限定动词，所以如果我们知道限定动词的数目，我们就知道子句的数目。

Each clause contains one finite verb, so if we know the number of finite verbs we know the number of clauses.

每个子句含有一个限定动词，所以如果我们知道限定动词的数目，我们就知道子句的数目。

Each clause contains one finite verb , so if we know the number of finite verbs we know the number of clause s

每个子句含有一个限定动词，所以如果我们知道限定动词的数目，我们就知道子句的数目。

A clause that takes a subjecr and a finite verb, and at the same time stands structurally alone is known as a finite clause.

包含有一个主语和一个限定动词同时在结构上能够独立存在的字句叫做定式子句。

Finite clause: A clause that takes a subject and a finite verb,and at the same time stands structurally alone.

定式句子：包含一个主语和一个定式动词，同时结构上能单独存在的句子。

This paper mainly deals with distribution of primitive polynomials and primitive elements over finite fields. LetFq be a finite field of q elements with characteristic p , xn + a1xn-1 +...+ an-1x + an be a polynomial over Fq .

本文主要研究有限域上本原多项式及本原元的分布，设F_q表示有q个元素的有限域，q为素数的方幂，F_q是F_q的多项式环，文献[10][11]中证明在F_q上，存在可预先指定a_1，a_2的n≥7次本原多项式。

Finite-difference time-domain method was used to simulate the coupling processes of ultra-wide-band electromagnetic pulses into a cavity with a slot, and an anisotropic perfectly matched layer absorbing medium was inserted to truncate the computational lattices.

用时域有限差分法模拟超宽带脉冲入射时与目标腔体上的孔缝相耦合的过程，用单轴各向异性的完全匹配层吸收边界条件截断时域有限差分网格。

The fundamental and higher-order harmonic ultrasound fields of a zeroth-order Bessel ultrasound field and focused Gaussian field in absorbing medium are computed and simulated by solving the KZK equation using a frequency domain finite difference method.

通过频域有限差分方法求解KZK方程，对吸收媒质中的零阶Bessel超声场、Gauss聚焦超声场进行计算，得到基波和高次谐波声场的数值解和仿真图，计算仿真结果验证了上述的理论结论。

How to establish the adjoint medel is discussed by using the Gateaux differential of function and the concepts of the adjoint operators in Hibert space. At the same time it is verified that selecting proper finite difference scheme can ensure discrete form remaining the same adjoint r...

文中利用泛函的Gateaux微分和Hilbert空间上伴随算子的概念讨论了连续的伴随模型的建立，并通过选择适当的差分格式离散伴随模型，使其保持连续时的伴随关系，同时给出了水温初始场最优化过程及相应的同化试验数值结果。

He has to relate with three women in the movie, and yet remain implicitly faithful to the unseen Lucinda.

让克劳德布里亚里成功地饰演试验了一个难度很大的角色：和三个女人打交道，但还要底下对观众未曾谋面的卢馨达保持忠诚。

The experiment was conducted to study effects of inulin on the growth performance, indices of immune organs and serum immunoglobulin of laying chicklings as well as the performance of inulin which replaced the antibiotics in diets by adding 0.2%, 0.4% and 0.8% of inulin, respectively.

试验旨在通过在蛋用雏鸡日粮中添加0.2%、0.4%和0.8%的菊粉，研究菊粉对蛋雏鸡生长性能、免疫器官指数和血清免疫球蛋白的影响，以及菊粉替代抗生素对蛋雏鸡的应用效果。