构造上的

In Chapter 2,a steady permeability identification problem in elliptic equa-tions for two-dimensional orthotropic medium is considered.We construct afunctional,obtain its first and second Gateaux differential,and prove that thefunctional is strictly convex on a convex admissible function set.We seek to iden-tify the permeability by minimization of the above functional.

第二章研究了二维稳态正交异性介质的渗透率反演问题，我们构造了一个泛函，求得该泛函的一、二阶Gateaux微分，证明了它在一个凸的容许集上的严格凸性，并使用极小化泛函即变分方法来求解此问题。

For a given strictly proper rational function matrix over a commutative Banach algebra, the controllable, observable realizations have been constructed, the uniqueness of minimal realizations under the system equivalence has been proved, also, the necessary and sufficient conditions for decoupling have been given.

对给定的定义在交换Banach代数上的严格真有理函数矩阵，构造了可控型、可观型的实现，证明了其极小实现在系统等价意义下的唯一性；给出了交换B.fi。

Hybrid\\|pencil beam model,which has been obtained by embedding the bipartition model into Fermi\\|Eyges multiple\\|scattering theory,shows the potential broad prospect in clinic because of the good calculation accuracy and efficiency.

d+ k$？' o1 |将双群模型计算的宽束电子的能量沉积与Fermi Eyges理论的侧向解相结合来构造电子笔束模型，即混合笔束模型。由于混合笔束模型的计算精度和效率较好，并且适用范围较大，因此，混合笔束模型展示了在放射治疗临床应用上的可能性。

The newspaper, a kind of plane carrier, whose external images are constructed by visual symbols. Visual and non-linguistic symbols have more effect than written language on readers' vision so that readers can get deeper understanding and impression of the newspaper.

报纸作为一种平面载体，它的外在形象是由视觉性符号构造出来的，而且视觉性非语言符号要比文字语言符号在视觉上给读者的视觉冲击更大，也更能加深读者对报纸的认识和记忆。

An Identity-based verifiably encrypted signature scheme using bilinear pairings on ellipse curve was constructed, and a new fair multi-party exchange protocol was designed.

利用椭圆曲线上的双线性对构造基于身份的可验证加密签名方案，基于这种签名方案构建了一种新的多方公平交换协议。

In 2004 Wikipedia won the Webby Award for "Community" and the Prix Ars Electronica's Golden Nica for "Digital Communities".

维基百科是一个用世界上所有的语言构造自由的百科全书的多语言计画。

The inherent rhythm of time passing, and of clocks in particular, is also a very structured and strong base on which a piece like this one can be constructed.

固有的节奏时间推移，和特别是时钟，也是一个很有条理和强大的基础上这样可以构造人的作品。

This thesis gives imaging log result demonstrations of shale strip, fault, bedding, validity distinguish of crack,...

给出了各种地质构造在成像测井成像图上的显示特征，同时给出了泥质条带和各种裂缝、断层、层理、裂缝的有效性判别，还给出了沉积旋回和储层综合评价的典型示例。

Finally, the splats are rendered from far to near by using elliptical weighted average filtering.

首先根据构造的移动最小二乘曲面计算采样点的表面几何属性，然后根据协方差分析确定点元在其切平面上的椭圆表示，最后采用椭圆加权平均滤波从远到近单遍绘制各点元。

See, snakes don't have actual ears, at least not on the outside, but they do have fully-formed inner-ear systems, completewith a cochlea, the fluid filled bone that harvests sound.

瞧，蛇类没有真正的耳朵，至少外观上没有，但是他们拥有构造完善的内耳系统，连同充满液体、用来接收声音的骨头——耳蜗。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。