二面角

采用Visualc++模拟这三种模型下的颈长变化，在模拟时主要考虑颗粒大小、烧结时间、烧结温度、二面角、烧结机制等因素。

The Visual C + + was adopted to simulate the change of sintered neck , some factors such as the size of particle , sintered time , sintered temperature , dihedral angle and sintered mechanisms were considered during the simulation .

在化合物II中，原子S1、C4、C41、S11所在平面与二甲基二硫代氨基甲酸酯的原子所在平面间的二面角为84.4（2）°。

In ( II ), the ethylene bridge and the bridged S atoms form a dihedral angle of 84.4 ( 2 )° with the dimethyldithiocarbamate plane .

各向异性材料涂覆金属二面角反射器的RCS分析

RCS analysis for anisotropic coating dihedral corner reflectors

二面角反射器的RCS特性分析

Analysis of RCS Characteristic of Dihedral Corner Reflectors

结合计算行波和二面角散射的经验公式，计算了导弹整体的RCS。

Combined with the equation of traveling wave and dihedral reflector , the RCS of total missile was calculated .

我们计划使用VONMISES分布预测这些二面角的分布。

We plan to capture the distribution of these dihedral angles by using the Von Mises distribution . 2 .

本工作还探讨加入TiO2影响共烧结料烧结性能的本质，认为加入TiO2而促进烧结的效果，主要与TiO2改变二面角的程度有关。

In addition , the effect of TiO_2 on the sintering of the mixtures would be related to the extent of dihedral-angle change .

在网上3D试衣系统的设计中，提出了布片无缝拼接算法以及二面角调整算法，并在实验中取得了较好的效果。

An algorithm of integral linking of cloth slices and an algorithm of dihedral angel adjustment are advanced during the implementation of net-based 3D fitting room system , and they are proved by satisfactory results of experiments .

本文建立了关于四面体二面角平分面面积的Stewart公式，即三维情形的Stewart公式。

This paper tries to establish Stewart formula for the areas of the bisection planes of a tetrahedron , which is called 3-dimensional Stewart formula .

采用多种高频预估方法对二面角反射器的雷达散射截面（RCS）进行了计算，所得结果与实验基本吻合；

The radar cross section of dihedral corner reflector is calculated by using ligh frequency prediction method , and the results are good agreement with the experiment .

从理论上分析了HMX的结构（键长、键角、二面角）。

The structure of β - HMX , such as bond length , bond angle , dihedral angle , is analyzed theoretically .

使用该软件计算了圆形直腔、二面角和S形进气道的RCS，结果与其他方法吻合良好，具有比较好的计算精度。

Finally , the RCS of a circle cylinder , a dihedral comer reflector and an S-shaped inlet is calculated , and the results demonstrate high accuracy of the proposed method .

本文得出了二面角目标模型的散射回波信号形式，从理论上模拟产生了人造目标SAR图像，建立了特征信号库，可用于进一步的目标检测和识别。

The paper provides the backscattering signal form of dihedral model , SAR image of man-made targets is simulated in theory and the signature library is formed which can be utilized in the subsequent stages of target detection and recognition .

与矩量法的计算结果比较表明，该方法可以较好地预测二面角反射器后向RCS的变化趋势。

The results are then compared with those applying the method of moment , which shows that the trend of backscattering cross section of the dihedral corner reflector can be accurately predicted with this method .

当发光基团松弛，C15次甲基桥的两个二面角的扭曲是相反的。

As the chromophore relaxes , the twist of the C15 methine bridge about its two dihedral angles is reversed .

结合理想二面角反射器RCS的经验公式，提出等效照明面积概念，并用于计算翼身组合段的RCS。

Combined with the engineering RCS formula of ideal dihedral corner reflector , the concept of equivalent illustration area ( EIA ) is presented , which is applied to compute the RCS of wing and fuselage joints .

构型和结构分析表明，AOT的加入能够引起聚合物链的二面角分布发生改变，这意味着AOT与PVP产生了相互作用。

The analysis of structure shows that the dihedral of polymer chain changed if AOT was added in the polymer system . It indicates that the interaction between polymer and surfactant occurs .

为求在不改变机体结构的前提下减缩飞机侧向RCS，采用齿形方案改变了挂架外形，消除了直角二面角结构，削弱了耦合效应。

In order to implement a reduction of RCS without any other change on the aircraft , the outline of the pylon is changed by applying a serrated scheme and the right dihedral angle structure is removed , so coupling effect is waken .

计算中以标准B型双螺旋DNA为初始结构，加上螺旋间的20个氢键约束和由核磁共振NOESY谱获得的186个NOE约束，另外还加入二面角约束32个。

One hundred and eighty six NOE constraints from NOESY NMR spectra of 100 ms mixing time and 20 hydrogen bond constraints as well as 32 dihedral angle constraints were added to the initial structure of standard B - type DNA .

结构测定表明，两个NTO五元环平面的二面角为82.42°，有一分子水参与配位，重原子铅的配位数为6。

Determination of its structure shows that the dihedral angle of the two five-membered rings of NTO is 82.42 °, that the ligands contain one water molecule , and the heavy atom ( Pb ) is surrounded by six atoms .

基于Krogager目标分解法，将各距离分辨单元的极化散射矩阵分解为3个简单散射体的散射矩阵，分别代表球形散射体、二面角散射体和螺旋体散射体的散射机理。

Krogager 's target decomposition scheme is used to decompose the backscattering matrix of each range cell into three elementary scattering matrices , which represent sphere , diplane and helix the scattering mechanisms .

本文还利用半经验（PM3）方法对分子势能面进行扫描，得出分子能量随二面角改变的变化率，初步探讨了分子柔性、刚性对其阻垢性能的影响。

In this paper , potential energy scan of molecules is also performed using semi-empirical ( PM3 ) method . The variation rates of molecular potential energy along with dihedral were obtained and the effect of flexibility ( or rigidity ) of molecules on scale inhibition efficiency was investigated .

通过对其键长、键角和二面角的值在初始298K、最高598K和降到298K下的概率分布以及退火前后各项势能变化的分析，发现二面角是构象改变即使能量降低的主要影响因素。

According to the distribution of the value of bonds , angles and dihedrals at initial 298K , highest 598K and descendent 298K , in addition the change of the energy , we find the dihedrals is primary factor in the frames transformation and result in energy reducing .

使用人工神经元网络方法预测蛋白质分子主链的二面角

Predicting the main-chain dihedral angles of protein using neural network methods

广义二面角在定量结构/活性相关分析中的应用

Applications of Generalized Torsion Angles in Studies on Quantitative Structure-activity Relationship

材料涂覆非正交金属二面角反射器的后向散射

Backscattering from Nonorthogonal Dihedral Corner Reflectors Coated by Radar Absorbing Materials

E~n空间二面角的另一类不等式

The another class of inequality about e ~ n spatial dihedral angle

利用蛋白质的二面角序列对蛋白质结构比对

Using dihedral angle series of protein for protein structure comparison

三角网格模型的自动化建模及基于二面角的网格简化。

Automatic constructing triangular surface and mesh simplification based on dihedral angle .

基于物理光学方法二面角反射器一维距离像特征信号计算

Physical Optics Approximation to the Range Profile Signature of a Dihedral Corner Reflector