查询词典 planar developable surface

The molecule of DAFF isomer is planar and packs layer by layer like graphite.

结果表明：DAFF isomer晶体属三斜晶系，空间群P-1，分子呈平面构型。

The activity of thorium was measured by using a HPGe detector and a planar HPGe detector. 238 Th has been identified for the first time by measuring the growth and decay of the γ rays from its daughter nucleus 238 Pa.

使用两台高纯锗探测器测量了样品的γ射线活性，观测到了238Th的β－衰变子体238Pa的γ射线的生长、衰变行为，测定238Th的半衰期为9.4±2.0min

Three different planar structural modes of 5 approximants have been put forward by using pentagon, decagon, flat hexagon and boat-shape respectively.

从高分辨像出发，分别用十边形，五角形以及扁六边形和船形构筑了五种十次准晶近似相的各三种平面结构模型。

The influence of coupling angle to the characteristics of wavelength-division demultiplexer based on planar waveguide supergratings［J］.

耦合角度对平面波导叠加型光栅解波分复用性能的影响［J］。

The fabrication process of a compact planar waveguide etched-grating demultiplexer based on silicon-on-insulator is studied.

研究了基于绝缘材料上的硅材料的平面波导刻蚀光栅分波器的主要制作工艺。

Introduce time this main factor, the angle that changes from trends will analyse those who inspect demand and supply is fluctuant, its are fluctuant if the circumstance uses department of planar rectangular coordinates to have a description, the image that reach is similar cobweb, british economist Kaldor is denominate of this one academic figure " of " cobweb theory.

引入时间这个重要因素，从动态变化的角度来分析考察需求与供给的变动，其变动情况若用平面直角坐标系进行描述，得出的图象就类似蛛网，英国经济学家 kaldor 把这一理论形象定名为"蛛网理论"。

The main reason which leads to incorrect planar overlap is the wrong layer thickness, while the influence of the incorrect scanning line depth which was induced by the deviation of the scanning parameters was minor.

影响面重叠率不正确的最主要因素为铺层厚度不正确，而扫描参数误差所引起的线变质深度不正确影响甚微。

Using planar graph to express the three-dimensional objects, or a projection map to express the three-dimensional objects, must be consistent with the projection theory of descriptive geometry.

用平面图形来表达三维立体实物，或用一个投影图来表达三维立体实物，必须符合画法几何的投影理论要求。

They had suppressed the cathodic process of carbon steel electrode. Their inhibition performance was also related with their molecule stereo conformation and electron configuration. Four of bis-(1, 1'-benzotriazoly)-α,β-diamide compounds linked via-CO 〓CO-chain were synthesized and certified by IR and 〓H-NMR. The minimum energy conformations of these compounds were obtained by MM2 forcefield program. The two benzotriazole moiety in BBT1 was more planar than in other compounds. This was beneficial in increasing the inhibition effects of BBT1. In 0.5M H〓SO〓 solution, BBT1 suppressed anodic corrosion reaction. In 3%NaCl solution, BBT1 suppressed both cathodic and anodic corrosion reactions. 1- [ (1'-imidazolly)-methyl] benzotriazole was synthesized by Mannich reaction.

合成了四个通过-CO〓CO-连接的双（1，1'-苯并三唑）-α，ω-二酰胺化合物，采用MM2分子力学程序优化了它们的分子结构，双（1，1'-苯并三唑）-α，ω-二酰胺化合物的缓蚀作用与其分子内两个苯并三唑单元的空间取向有关系，良好的平面性有利于苯并三唑二聚体的吸附和缓蚀作用，苯并三唑二聚体BBT1分子内两个苯并三唑单元近似平行，所以显示出较好的缓蚀效果。0.5M硫酸中BBT1主要抑制铜的阳极溶解的电化学反应；3％NaCl溶液中，BBT1对铜的阳极溶解和氧的阴极还原过程均有抑制作用，相比较而言对阴极过程的抑制作用更大一些。

In this paper, the problem of an arbitrarily shaped planar crack which is perpendicular to the interface of bimaterial and loaded by interior normal pressure is studied by means of the method of hypersingular integral equation in three dimensional fracture mechanics.

利用三维断裂力学的超奇异积分方程方法，对双材料空间中重直于界面的平片裂纹Ⅰ型问题进行了研究。

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