多面体

When section size of crystalline pillar is less than dc, the pillar collapses and fuses; while the section size is larger than dc, it does not happen. And the value of dc increases lineally as the temperature rises.

处于临界尺寸的纳米晶柱在退火过程中，有可能发生上述熔化一重结晶过程，亦有可能通过表面原子扩散迁移使表面结构重组，形成同样由{111}{100}面围成的多面体。

In addition to the black-white double-lobe caused by the displacement field around pores, we demonstrate that LSC should correspond to a novel, peculiar class of anti-phase domain, of which the interior is a local isomorphism with a non-zero phason-type displacement ε〓w〓 i.e.

利用这个结果，我们发现黑白双瓣衬度是二十面体准晶中的多面体微孔引起，而环形衬度则对应于一种二十面体准晶中新奇的反相畴界，其两侧是由相位子型位移ε〓w〓＝B〓联系着的局域同晶类。

The other is Lur'e system. Two sufficient conditions for its robust absolute stability are respectively given under the different uncertainty modes, i.

该准则不包含Lyapunov矩阵与系统矩阵的乘积项，当用于分析凸多面体不确定系统的鲁棒性能时，能够有效降低二次稳定框架的保守性。

It is proved that all monic polynomials of order n with roots lying in some open region on the complex plane forms a simply connected set in the polynomial parameter space. Based on this result, Edge Theorems for D-stability of general polyhedrons of polynomials and Boundary Theorems for D-stability of compact sets of polynomials are obtained.

证明了其根位于复平面中某开域的所有n阶多项式的全体构成多项式参数空间中的一个单连通集，并基于这一结果进一步提出了关于一般多面体多项式族D-稳定性的棱边定理和关于一般多项式紧集D-稳定性的边界定理。

Science is multi-faceted phenomenon in that it manifests itself in different images and characteristics.

科学是一个复杂的多面体，它有多种形象和品格。

The problems of robust stabilization of interval plants,diamond plants,and multilinear polytope of plants which are formed byconnecting more than one uncertain plants in series are discussed.

讨论了不确定区间对象族，不确定菱形对象族及多对象串联所构成的多线性凸多面体对象族的鲁棒镇定，并分别给出了顶点镇定结果。

The idea: Literature is one of the special acts of human beings, which is a multiplex and active construction.

题要：文学是人类进行的一种特殊的文化活动，是一个动态的多面体。

Metallurgy School, UST Beijing, Beijing 100083, China）ABSTRACT The negative thermal expansion in some complex oxides has beenattributed to transverse thermal motion of A-O-M linkage composed of two-coordinate oxygenbridge bond, and the librationsand tilts of essentially rigid polyhedral blocks in openframework structure. The isotopic NTE materials have been finding moresubstantialapplications in composites and other relative technique fields.

氧化物材料负热膨胀机理邢献然摘要氧化物的负热膨胀性是由于在其开放式的骨架结构中，有二配位的桥氧键产生横向热运动，以及引起的多面体热摆动和耦合作用使非键合M-M1键距变短，导致单胞体积缩小；各向同性NTE氧化物在复合材料及其相关技术领域具有更广泛的应用价值。

It has discussed the polyhedron modeling, the feature-based 3D mannequin surface modeling , the human parameters surface modeling and the 3D mannequin modeling based on the condition of the net border lines.

对多面体建模、基于特征的服装人体曲面建模、参数化的曲面建模、以网格边界线连续为条件的三维人体建模方法作了详细的论述。

Two optimal criteria of the vertex normal vector estimation are presented.

给出了一个判别二维多边形和三维多面体顶点法矢计算方法优劣的准则。

Further more, the simplified analysis method on stressed-skin effect of corrugated steel sheet is also discussed in detail.

此外还比较详细地探讨了蒙皮效应的简化分析方法。

If I had known her telephone number,I would have called her.

要是我知道她的电话号码，我就打电话给她了。