查询词典 geometries

Objet's machines can produce not only solid things out of plastic-type materials, but complex ones with moving parts too, such as a working model of a bicycle chain or a small gearbox.

Objet Geometries不但可以制造塑料的立体物品，还能制造有活动零件的复杂产品，如自行车链或小变速箱的可用模型。

At the B3PW91/6-31+G level of DFT, the geometries of all species (reactants, transition states, and products) were optimized and the vibration frequencies and zero point vibrational energies were calculated.

在B3PW91/6-31+G水平优化了12个不同反应通道上各驻点(反应物、中间体、过渡态和产物)的几何构型，并计算了它们的振动频率和零点振动能。

In this study, a commercial CAD/CAM Software is used to plan and generate the multi-axis tool path, and a table rotating/tilting type five-axis machining center is used to perform the experimental machining operation. The material of the die studied is NAK 80 die tool steel, and the geometries are modeled as concave and convex spherical surfaces. Milling parameters considered are spindle speed, feed rate, and different types of cutting tool path. The experimental results show that the surface roughness for concave spherical surface is about 0.247 μm and roundness is about 0.0283 mm and the surface roughness for convex spherical surface is about 0.250 μm and spherical roundness is about 0.0551 mm under the cutting conditions mentioned in this study.

本研究的实验方法与步骤包括利用商用CAD/CAM系统针对实验对象规划三轴/五轴同动加工路径，并经后处理程式转换，在本实验室之平台倾斜/旋转型之五轴加工机上进行实验，实验对象为NAK80模具钢材料之凹与凸球形曲面之加工，此外考虑的切削条件有主轴转速、进给速度、加工路径等，在本研究所设定之最佳切削条件下，凹球形曲面之真圆度约为0.0283 mm，粗糙度为0.247 μm，而在相同切削条件下，凸球形曲面之真圆度为0.0551 mm，粗糙度为0.250 μm。

Using density functional theory, the adsorption of cyanide on the different sites of Cu(100) surface was studied with end-on and side-on geometries.

采用密度泛函方法，以原子簇Cu14 为模拟表面，对CN自由基分子在垂直和平行Cu( 10 0 )表面不同位置的吸附情况进行了研究，结果表明：通过原子C垂直吸附在表面的顶位是其最佳吸附方式，吸附后CN键振动频率发生蓝移；而其它吸附方式中CN键振动频率均发生红移。

The geometries, electronic structures, one- and two-photon absorption spectra for a series of dendritic molecules have been studied.

与偶极矩化合物相比，八极矩分子具有更高的透明性和更大的双光子吸收截面，是更有前途的双光子吸收材料。

They were chosen in this study to calculate the molecular geometries, electronic structures, and IR spectra of a series of Pcs having different centers or/and different substituents on the benzene rings.

设计并研究探讨了近50个酞菁化合物的几何构型、电子结构、光谱性质和热力学性质。

They were chosen in this study to calculate the molecular geometries, electronic structures, and IR spectra of a series of Pcs having different centers or/and different substituents on the benzene rings.

设计并研究探讨了近50个菁化合物的几何构型、电子结构、光谱性质和热力学性质。

They were chosen in this study to calculate the molecular geometries, electronic structures, and IR spectra of a series of Pcs having different centers or/and different substituents on the benzene rings. CPHF and ZINDO are the most popular methods to study the non-linear optical and excited state properties, respectively.

ZINDO和CPHF分别是计算激发态和NLO极化率的最常用方法之一，本文用ZINDO计算了部分化合物的激发态，得到了紫外可见光谱图，用CPHF/3-21G方法研究了近20个不同取代基和不同金属的菁化合物的NLO性质。

They were chosen in this study to calculate the molecular geometries, electronic structures, and IR spectra of a series of Pcs having different centers or/and different substituents on the benzene rings. CPHF and ZINDO are the most popular methods to study the non-linear optical and excited state properties, respectively.

ZINDO和CPHF分别是计算激发态和NLO极化率的最常用方法之一，本文用ZINDO计算了部分化合物的激发态，得到了紫外可见光(来源：Aeb8bBC论文网www.abclunwen.com)谱图，用CPHF/3—21G方法研究了近20个不同取代基和不同金属的酞菁化合物的NLO性质。

Five different mixing chamber geometries are tested experimentally with the stoichiometric gasoline-compressed air at frequency of 6 Hz and the effect of screw-pitch and inner diameter ratio on the performances of PDE is investigated.

实验针对爆震频率为6Hz、当量比为1的汽油和压缩空气混合气，实验研究了脉冲爆震发动机模型混合室内5种不同扰流螺纹螺距内径比对其性能的影响。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。