MNDO calculations and group theory were carried out on tetraphenyl porphyrine(TPP) to obtain its optimum molecular geometry.

运用MNDO计算和群论，优化得到了较满意的中位取代四苯基卟啉(H2TPP)的分子构型。

The boy puzzled his way through geometry.

那男孩煞费苦心地钻研几何学。

Relationships between the minor axis semidiameter and major axis semidiameter have been empirically determined for different structural detail geometries.

对于不同结构细节的几何形状，已经确定了短轴和长轴半径之间的关系。

She is fond of geometry.

她喜欢几何。

So-called "gimbaling errors" can result from improper gimbal geometry or from imperfect roll and pitch stabilization of the gimbal system.

所谓“框架误差”是框架几何形状的不正确或框架系统的侧摆和俯仰稳定得不完善所产生的。

It has been described as work that “relies on geometry and symmetry, fusing curvilinear shapes into pixilated, cleverly impressionistic jigsaw puzzles”.

他的作品被称作「依讬几何和对称，将曲线融入搞怪之中，机智运用印象主义的智力拼图」。

Finally,the edge data of the particles was processed smoothly applying geometry theory.The experiment results show that the method can segment urina...

实验结果表明,该方法在尿沉渣图像分割的应用中得到了令人满意的结果。

The trifocal tensor is the mathematical expression of trifocal geometry, it has strict constraints to correspondence points and lines in three images.

三视张量是三视几何的数学表达,它对三幅图像上的同名点、同名线都存在严格的约束关系。

If you want to be a draftsman, a machinist, a molder, or a patternmaker, you'll need algebra and geometry and even trigonometry.

如果你想成为手工艺人、缝纫工、造型工或制模工，你需要代数和几何，甚至三角学。

In this paper,the geometries of leucine,its thermolytic intermediate and final products are optimized by AM1 method,respectively.The parameters of the total energy and bond order etc are obtained.

用AM1方法全优化计算了亮氨酸及其热分解中间产物、产物分子的几何构型，得到其总能量、键级等数据。

The aurone compounds are generally on one plane ,and they have a bigger conjugate system .The inducement of hydroxyl substituents has little influence on their own geometries .

橙酮类化合物分子共面性较强,为较大的共轭体系,取代羟基的接入,对橙酮类化合物共面性影响不大。

To achieve such a rapid and low complexity of the distribution，and it proposes a semiregular mesh geometry coding related to the reconstruction of the mean square error of approximation.

为了实现这种快速和低复杂度的分配方法，提出了和半规则网格几何编码相关的重建均方误差的近似方法。

In order to reduce the error in the calculation, this article raises a measure method to the radius of nonplastic circular arc which basis on the principle of geometry.

为了降低测量误差,提出了对非整形圆弧直径测量的方法。

With the request of geometry modeling system and application of the concept about complexes algebraictopology in the field of industrial production , the theory of non-manifold model come into being.

工业产品几何造型技术的发展要求,以及代数拓扑学复形等概念引入到几何造型中,因此产生了非流形几何造型理论。

At the same time the required hypothesis of cohence and non-cohence between second-phase participle and grain boundary is also excluded when the model are worked out from the perspective of geometry.

同时，本文模型还避开了从几何角度推导模型必需的二相粒子与晶界之间的共格或非共格的假设。

Object displays various pattern, if superficial, or geometry being hit by the planet and the fixed star in anthodium , snowflake , shell helix or sky in animal skin , leaf or bark arranges middle.

谢谢了，摘要如下自然是“被设计的”，这一猜想可以为事实证明。事物呈现出各种图案，如在动物皮、树叶或树皮的表面上，或在头状花序、雪花、壳的螺旋或天空中行星和恒星的几何排列中。