radius ratio

The main dimensionless parameters that influence the homogeneity of the fluid thermal boundary conditions are Peclet number, the wall to fluid thermal conductivity ratio, the heating/ cooling length radius ratio and the wall thickness radius ratio of testing pipe.

影响这种不均匀性的主要因素是Peclet数、管壁材料的相对导热系数、实验段相对加热长度及管壁相对厚度等无量纲参数。

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

换热Nu随Ra和半径比的增大而上升；

The pore structure features small pore throat radius and low height-wide ratio, and much fractal dimension, big capillary tortuosity and high pore-throat radius ratio.

孔隙结构特征表现为孔喉半径及其高宽比小，分形维数、毛细管弯曲度和孔-喉径比大。

The Cause and Countermeasure of Producing Over Cut in Cutter Radius Compensation in NC Milling PORE THROAT RADIUS TO COIL GYRATION RADIUS RATIO AS CHARACTERISTIC OF ADAPTIVITY OF POLYMER MOLECULAR MASS TO CORE PERMEABILITY

数控铣削中半径补偿产生过切的原因及对策聚合物分子量与岩心渗透率配伍性&孔隙喉道半径与聚合物分子线团回旋半径比

Mean-Square Radius of Gy ratio n of Polydimethylsiloxane Chain

聚二甲基硅氧烷链的均方迥转半径

The unique reverse structure was also put forward. ( 2) The processes and methods of calculating wall-attachment radius, wall attachment distance varied with the offset ratio were derivated using Attachment Point Model and Control Volume Model respectively.

分别使用附壁点模型与控制面模型，推导出附壁半径，以及对应各种位差时的附壁距离的计算过程和方法。

Using the binomial fitting method in MATLAB to program numerical calculation program, the analytical formulations between feed speed, width-radius ratio and width spread ratio were deduced.

使用MATLAB编写了数值计算程序，采用二项式拟合的数值方法，总结归纳出了进给速度和宽径比与宽展率之间的解析公式。

The real shear rate makes up only about 35 per cent of the total apparent shear rate when shear rate is higher and capillary ratio of length to radius is lower. It shows clearly that the end correction is necessary when rheology parameters are discussed.

当切变速率较高，毛细管长径比较小时，真实剪切应力仅占表观剪切应力的35%左右，证明了毛细管流动末端校正的必要性。

The radius to thickness ratio.

径厚比的影响。

Circumferential Ultrasonic Test for Forged Cylinder with the Ratio of Inner Radius to Outer Radius Less Than 0.8

内外径之比小于0.8筒形锻界周向超声检测

From the solutions, results for the radiant flux leaving the base face of the cavity are presented as a function of the emittance, of the depth-radius ratio of the cavity, and of a temperature gradiant parameter.

结果表明，腔底的有效辐射是比辐射率、腔深和半径之比以及一个表示温度梯度的参数的函数。