查询词典 triangular decomposition

The calculated results show: the ground state structures of PtNi5, Pt2Ni4 and Pt3Ni3 clusters are quadrangular bi-pyramid, and Pt4Ni2 and Pt5Ni clusters are triangular bi-pyramid with hat and triangular pyramid with quadrilateral, respectively. From the point of view of thermodynamics, PtnNim clusters are stable because of the negative enthalpy of formation; the positive NICS of PtNi5 clusters show anti-aromaticity, The negative NICS of Pt2Ni4 and Pt5Ni clusters show aromaticity. The number of the IR absorption peak of Pt3Ni3 is the most. The IR and raman absorption peak of PtNi5 , IR of Pt2Ni4, Raman of Pt3Ni3 and Pt4Ni2 have only one. The absorption peak of Pt5Ni appears in the bigger frequencies only, and is zero almost in the small frequencies.

研究结果表明：PtNi5、、Pt2Ni4、Pt3Ni3团簇的基态结构都为四角双锥结构，Pt4Ni2 和Pt5Ni团簇的基态结构分别是戴帽三角双锥和三角锥戴四边形结构；PtnNim团簇的生成焓都为负值，表明团簇在热力学上是稳定的；由NICS值可得，PtNi5团簇具有反芳香性，Pt2Ni4和Pt5Ni团簇具有芳香性；从光谱分析来看，Pt3Ni3团簇的IR较强吸收峰的个数最多，PtNi5团簇的IR和Raman、Pt2Ni4团簇的IR、Pt3Ni3和Pt4Ni2团簇的Raman只有一个强吸收峰值，Pt5Ni团簇的峰值只出现在频率较大的位置，频率小的位置几乎为零。

ABSTRACT Based on the discussion of the characteristics of triangular Bezier patches, the theory and method of triangular Bezier surface m...

本文在分析Bezier三角曲面性质的基础上，系统地研究了离散数据的Be-zier三角曲面造型的理论、方法和应用。

Then, the model is extended to triangular mesh surface. The definition of highlight-line model on triangular mesh surface is put forward.

本文首先在NURBS曲面上实现了连续曲面的高光线模型，然后将高光线模型拓展到三角网格曲面中。

ABSTRACT Based on the discussion of the characteristics of triangular Bezier patches, the theory and method of triangular Bezier surface modeling for 3-D scattered data points have been systematically studied.

本文在分析Bezier三角曲面性质的基础上，系统地研究了离散数据的Be-zier三角曲面造型的理论、方法和应用。

Based on the improvement of Taubin s discrete curvature estimation method of triangular mesh by the adoption of area and angle weighted triangle vertex normal vector calculation formula and triangle centroid weights, a novel algorithm for triangular mesh regularization is presented.

采用面积夹角加权的三角网格模型顶点法矢及三角片质心权值对Taubin的三角网格模型离散曲率计算方法进行了改进，在此基础上提出了一种新的三角网格模型优化调整方法。

Concentration of silver behenate solution affects the morphology and packing density of silver. The thin silver film of spherical silver particles, with an average diameter of 160 nm has been fabricated by a millimolar solution of silver behenate. The thick silver film is consisting of the regular silver particles with triangular or truncated triangular shape, which is formed at high concentration.

山嵛酸银分散液的浓度影响银薄膜中银粒子的堆积密度和形态，在很低浓度下可以得到银粒子均匀分散的金属银薄膜，球形银粒子平均粒径为160nm；而高浓度的山嵛酸银分散液得到较厚的金属银薄膜，薄膜中含有规则的三角形和截三角形银颗粒。

Leaves triangular or ovate triangular, 1.5-5 cm wide; inflorescence racemose or corymbose.

叶三角形的或卵形三角形，1.5-5厘米宽；花序总状的或伞房状。

Radical leaves with sheath broadened at base; petiole 30--90 cm; leaf blade triangular or triangular-ovate, 5--15(--25)× 3--15 cm, base sagittate to hastate, apex acute to acuminate.

胚根叶具鞘扩大在基部；叶柄30-90厘米；叶片三角形的或三角状卵形， 5-15(-25)* 3-15 厘米，基部箭头形到戟形，先端锐尖或渐尖。

Leaves needlelike, slender or stout, straight or twisted, triangular, flabellate-triangular, or semiorbicular in cross section, stomatal lines several, on 1, 2, or all surfaces, vascular bundles 1 or 2, resin canals 2-10 or more, marginal or median, rarely internal, base enclosed by persistent or deciduous, membranous sheath. Pollen cones usually borne in spikelike clusters at base of 1st-year branchlets, sessile, cylindric or ovoid; pollen 2-saccate.

叶针状，纤细的或粗壮，直的或扭曲，三角形，扇形三角形，或半圆形在横断面上，气孔线数个，在1，2上，或全部表面，在第1 年的小枝，无梗，圆筒状的或卵球形的穗状的簇生在基部里的雄球花通常着生；花粉2囊。

To simplify the comparison of symmetrical triangular fuzzy numbers, through the analysis to the satisfactory degree function of fuzzy numbers presented by Tanak, a simple and convenient formula for comparing two symmetrical triangular fuzzy numbers is presented, and the limitation of the formula presented by Liu Xinwang is proved.

为简化正规三角模糊数的比较。通过分析Tanaka提出的模糊数比较的满意度函数，得到了2个正规三角模糊数比较的简便公式；指出了刘新旺提出的模糊数比较公式的局限性。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样