半径比

换热Nu随Ra和半径比的增大而上升；

Nu number is increased with the Ra number and radius ratio monotonously .

结构的阻尼损耗因子η除了受到模量比e，厚度比δ和平均半径比r的影响外，还与阻尼材料的损耗因子β成正比。

Besides affected by the influences of module ratio e , thickness ratio δ and average radius ratio , the damping loss factor η of structure is also in direct proportion to the loss factor of damping material β .

二元A-15相的形成及其Tc变化的参数规律&电子密度和组元半径比的综合影响

An empirical rule of binary A-15 phases formation and their t_c variation

关于用原子半径比讨论A-15相Nb3Si结构稳定性的商榷

Comments on the stability of the nb_3si A-15 structure based on the atomic radii ratio

基于三苯甲烷染料-阴离子缔合物为电活性物质的PVC膜离子选择性电极的设计（Ⅰ）&阴离子的电荷-热化学半径比与电势选择性系数的关系

Design for PVC Membrane Ion-selective Electrodes Based on Ion-Pairs of Triphenylmethane Dye-Anions as Electroactive Materials-The Relation ship between the Ratio of Charge to Thermochemical Radius of Anions and the Potentiometric Selectivity Coeff

得到了这三种流态下的速度分布和流量计算公式，其应用范围是0.5≤K<1，K是半径比。

Thus obtained are the formulas to calculate the speed distrbution and flow rate at the three states , with an applicable range of 0.5 ≤ K < 1 , of which K is the ratio of radius .

本文利用我们所提出的键参数拓扑指数H与线性回归方法。得到了A-15超导体和Ba2RECu3O（9-δ）氧化物超导体的临界温度与其组成元素的原子电荷&半径比之间的定量关系式。

A quantitative relationship between critical temperature of A-15 superconductors and single-phase Ba_2RECu_3O_ ( 9 - δ) superconductors and their component elemental atomic charge-radius ratio was obtained by using bonding parameter topological index and linear regressive method .

对有限长中等半径比同心旋转圆柱间Taylor-Couette流进行了数值计算，以研究侧墙对Taylor-Couette流的影响。

Numerical simulation was made to study effect of the endwall on Taylor-Couette flow between the rotating cylinders .

热效应下的相位延迟与球面透镜相比存在高阶球差，在激光系统工作中应选择最佳模半径比（Wo／Wp）从而兼顾斜效率和光束质量。

Phase detention of thermal effect cannot be equivalent to a spherical lens , and thus an optimization module ratio ( Wo / wp ) of pump and laser mode should be choice in a laser system .

这可能是由于Cr2+的半径比Zn2+的半径大，所以当其掺入到ZnS晶体中时，其将推动S配体向外移动，从而引起局域结构的膨胀畸变。

The expansion distortion may be ascribed to the fact that the radius of Cr2 + is bigger than that of Zn2 + . Thus , the Cr2 + will push the ligands outward when it is doped into the crystal .

胶束簇（11%-15%，φ），由于球形胶束之间的缔合，形成直径明显高于球形胶束的聚集体，其半径比球形胶束大1nm左右；

Due to the coalescence among spherical micelles , larger micellar clusters are formed in a concentration ranging from 11 % to 15 % (φ) .

简单离子晶体离子半径比的计算

A General Calculation of Radius Ratio of Simple Ionic Crystals

临界半径比的计算和半径比规律可靠性的考察

The calculation of critical radius ratio values and the investigation of the reliability of radius ratio rule

肺小血管壁厚半径比与风湿性二尖瓣病变的关系

Relationship Between Ratios of Wall Thickness to Radius of Small Pulmonary Vessels and Rheumatic Mitral valve Lesions

此外存在一临界高宽比，其值约在3～5，与半径比有关；

Critical aspect ratio of value between 3 ~ 5 is found which is affected by radius ratio .

理论研究表明：共振频率主要受到粒子核壳半径比调制；此外，外界环境、粒子形状、尺寸大小也会对共振波峰产生影响。

It has been discovered that the resonance frequency is mainly modulated by the core-shell radius ratio of a particle .

临界Ma数随着深宽比的增大而减小，随着半径比的增大而增大。

The critical Ma number decreases with the increase of the aspect ratio and the decrease of the radius ratio .

通过对比分析认为，远城端的一般最小半径比近城端大。

By comparing the results , it was believed the general minimum radius of the rural-side was larger than urban-side .

滴状冷凝中液滴的脉动规律及分形分布模型中相邻两代液滴半径比参数

The Pulsating Feature of the Dancing Droplets and Droplet Radius Ratio of Adjacent Generations in the Fractal Model of Dropwise Condensation

本文用双位阱壳模型投影交分方法对~6Li基态进行计算.计算说明，~6Li基态中氘的方均根半径比自由氘核的方均根半径小；

The ground state of ~ 6Li is investigated by means of the projected variational method for double well-cluster shell model .

晶体中正负离子半径比（R~+/R~-）与晶胞和结晶形态

Morphology Related with the Ratio of Cation and Anion Radii ( R + / R - ) and Unit Cell in Crystal

此外内、外桶半径比（0到1之间）增大，也将使流动趋于稳定。

Besides these , the increment of the radius ratio of the inner and outer cylinder also has stabilizing effect on the flow .

岩石颗粒最小粒径与颗粒半径比均对断裂强度因子有不利影响，且颗粒半径比的影响较大。

Besides , minimum radius and radius ratio of particle , especially the latter , have adverse effects on fracture strength factors of rock .

结果表明：浮动套内外半径比增大，偏心率减小，承载能力增大；

Result indicates increasing along with the radius ratio of inner and outer floating ring , the eccentricity reduces , the load-bearing capacity increases ;

对于内外半径比一定的单层圆环复合材料飞轮，飞轮的环向应力远大于其径向应力。

For the single-ring composite flywheel with a given inner to outer ratio , the hoop stress is great bigger than the radial stress .

起主要作用的是介质与内导体的半径比，而不是介质的绝对尺寸。

The radii ratio of the coating and the inner conductor played a primary role as compared to the absolute size of the magnetic material .

对于换能器第一阶径向振动，其有效机电耦合系数随半径比增大单调增大，而第二阶径向振动有效机电耦合系数随半径比增大单调减小。

The effective electro-mechanical coupling coefficient for the first radial vibration is increased ; while the effective electro-mechanical coupling coefficient for the second radial vibration is decreased .

数值结果表明，组成耦合器的光纤半径比对偶模和奇模的传播常数都有明显的影响。

Numerical result shows that the propagation constants of even and odd modes are obviously affected by the radius ratio of the two fibers composing the coupler .

等厚度圆环飞轮的应力分布主要受飞轮转子内外半径比和材料物理特性的影响。

The stress distribution in constant-thickness rim flywheels is mainly influenced on two factors , the inner to outer radial ratio and the characteristics of composite materials .

增大环壳与柱壳半径比可以有效降低环壳段中部的纵向弯曲应力。

Increasing the ratio of radius of the toroidal shell and the cylindrical shell can efficiently decrease the longitudinal stress in the middle of the toroidal shell .