The most stable structures of Si_4M clusters are the trigonal bipyramid structures with C_(2V) symmetry.
在所有的Si4M原子簇中,具有C2V对称的三角双锥结构是最稳定的构型,且同一主族金属原子,按照从上到下的顺序,Si—M键Mulliken重叠布居数依次减少,键强度依次减弱,键长依次变长;同一周期金属原子,按照从左到右的顺序,Si—M键Mulliken重叠布居数依次增大,键强度依次增强,键长依次变短。
Clinical Observation on 899 Children Infected with Intestinal Nematodes and Treated with Tribendimidine Enteric Coated Tablets;
三苯双脒肠溶片治疗899例儿童肠道线虫感染的临床观察
Effect of a Novel Drug——Enteric Coated Tribendimidine in the Treatment of Intestinal Nematode Infections;
新药三苯双脒肠溶片治疗肠道线虫感染的效果观察
Effect of Tribendimidine on the Ultrastructure of Ancylostoma duodenale and Necator americanus;
三苯双脒对钩虫超微结构的影响
Modeling and simulation analysis of a dual three-level STATCOM;
双三电平STATCOM的建模与仿真分析
The algorithm of simplified three-level SVPWM was analyzed in detailed,the traditional two-level voltage space vector control algorithm was applied to the dual three-level inverter.
详细分析了三电平SVPWM的简化算法,将传统两电平电压空间矢量控制算法应用于双三电平变换器。
The effects of Gurney flap on double delta wing aerodynamic performance in low speed wind-tunnel tests;
Gurney襟翼对双三角翼气动特性影响的低速风洞实验研究
Experimental investigation of the vortex characteristic over 75°/45°double delta wing;
75°/45°双三角翼旋涡特性的试验研究
Compared with a delta wing aircraft, the double delta wing configuration has better aerodynamic performance at high angles of attack.
双三角翼气动布局比三角翼飞机具有更好的大攻角空气动力特性。
Experimental study on pressure measurement distribution of double-delta wings;
双三角翼压力测量实验研究
The vortex visualization and surface pressure distribution for a 75°/45°double-delta wing were carried out in the water tunnel and in the low speed wind tunnel of BUAA.
本文通过风洞试验和水洞试验研究了７５°／４５°双三角翼的外翼前缘形状对大迎角分离流动的影响。
The vortex visualization and surface pressure distribution measurement for a 75°/60° double-delta wing were carried out in the water tunnel and in the low speed wind tunnel of BUAA.
笔者对75°/60°双三角翼模型进行了水洞流态观测实验、低速风洞测压实验、空间流场测量实验,研究了双三角翼外翼前缘钝度对气动特性影响,包括对涡态的影响。
A trigonal bipyramid has three equatorial and two axial positions.
一个三角双锥体有三个赤道位和两个轴向位。
the base of a triangle, pyramid, etc
三角形的底边、 角锥体的底面等.
The Application of “Four Centers” of a Triangle in Triangular Cone;
三角形的“四心”在三棱锥中的应用
Structural Design and Machining Technology of a Double Ridge Horn
双脊角锥喇叭的结构设计和工艺加工
Numerical study on spray angle of the dual-orifice pressure-swirl atomizer
双路离心式喷嘴雾化锥角的数值研究
The Research on Cooling Tower of Latticed of Double-Layer Hyperbolic Pyramid;
双层双曲线四角锥网壳结构冷却塔的研究
Study on 3D Solid Modeling of Conical Twin-Screw Extruder;
锥形双螺杆三维实体造型的开发研究
Research on 3D Molding and Meshing Clearance of Conical Twin-Screw
锥双螺杆的三维建模与啮合间隙研究
Male run tee--Body
GB/T3744.2-1983卡套式锥螺纹直角三通接头体
Male run tee--Assembly
GB/T3744.1-1983卡套式锥螺纹直角三通管接头
Realization of 3D Parameter Design of Double Circular Arc Profile Bevel Gear;
双圆弧弧齿锥齿轮三维参数化设计的实现
The Bitetrahedron Revolving on Own Axis;
自转中的双三棱锥——科学和宗教关系的完美架构
Study on Three-dimensional Virtual Simulation Machining of Double Circular Arc Profile Spiral Bevel Gear
双圆弧弧齿锥齿轮的三维虚拟仿真加工
Three-dimensional Model Analysis of Double Circular Arc Spiral Bevel Gear
双圆弧弧齿锥齿轮三维参数化模型的构建分析
A triangular or tapering piece of cloth forming a part of something, as in a skirt or sail.
Ｖ形三角布组成如裙子或帆的一部分的三角形或锥形的布块
The point on a triangle or pyramid opposite to and farthest away from its base.
角顶三角形或者角锥的与其底边相对且具底边最远的顶点
I: What was the idea behind the prism for the album cover?
那张专辑封面的三角锥的主意是怎么一回事？
Cone Spline Approximation and Refinement Scheme for Triangular Mesh;
圆锥样条逼近与三角网格曲面细分算法