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1)  Diameter ratio
直径比
1.
Diameter ratios and interferences have been determined by using Lame's equation with the condition of maximum inner pressure without yielding of materials after shrink fitting and during forming.
由Lame’s方程的最大内压条件 ,确定压装后和挤压期间每层材料临界屈服时的直径比和过盈量 ,并给出不同材料模芯组合模的统一计算模型 ,开发最优直径、过盈量、最大接触压力的通用计算程序 ,通过对开式冷挤压某车传动轴花键轴的具体应用表明 ,使用高硬度材料的冷挤压模具进行预应力处理后 ,冷挤压件精度更高 ,模具结构更加坚
2.
The paper analyses the influence of diameter ratio on the simple projection of the line of intersection of tow intersected cylinders on the basis of the establishment of mathematical patterns,and provides the selected basis for the drawing of the line of intersection.
在建立相贯线数学模型的基础上,分析了直径比对正交圆柱相贯线简化投影的影响,提出了正交圆柱相贯线投影绘制方法的选择依据。
3.
Using numerical simulation and experiment,the influence of the diameter ratio of male die and female die on metal flowing was researched; and the metal flowing was analyzed when diameter ratio is 2,1.
通过数值模拟,结合实验研究了在温热挤压成形铝合金轮辋时凸模和凹模直径比对金属流动的影响,并且分析了直径比分别为2、1。
2)  equivalent diameter ratio
等效直径比
1.
This paper studied the influence of key factors, such as different values of equivalent diameter ratio, fore-and-aft V-cone angle, and Reynolds number, on the air discharge coefficient of V-cone flowmeter, by combining computational fluid dynamics (CFD) simulation with physical experiment.
将计算流体动力学(CFD)气体仿真实验和物理实验相结合,探索不同等效直径比、前后锥角等关键几何参数以及雷诺数对内锥流量计气体流出系数的影响规律。
2.
Computational fluid dynamics(CFD) numerical simulation tests for cone differential flowsensors with diameter of 100 mm were carried out by RNG k-ε turbulence model,and the va-lues of equivalent diameter ratio β,are 0.
利用RNGk-ε模型对100mm口径锥体差压式流量传感器进行了CFD数值模拟实验,其等效直径比β值分别为0。
3.
Computational fluid dynamics(CFD)numerical simulation tests for cone differential flowsensors with diameter of 100 mm were carried out by RNG k-ε turbulence model,and the va- lues of equivalent diameter ratio β,are 0.
利用 RNG k-ε模型对100 mm 口径锥体差压式流量传感器进行了 CFD 数值模拟实验,其等效直径比β值分别为0。
3)  blow-up ratio
模膜直径比
4)  diameter ratio
直径螺距比
5)  diameter-draft ratio
直径-吃水比
6)  length-diameter
长度直径比
补充资料:当量比表面直径、表面积体积平均直径
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性质:又称当量比表面直径、表面积体积平均直径。是颗粒群表面积分布的平均直径。其意义为与颗粒群的粒形相同,总体积相同、总表面积相同,且粒度均匀的一个假想颗粒群的粒度。亦即指与该颗粒群的粒形相同,比表面积相同的一个颗粒的粒度。 

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