equivalent particle size

Using scour data downstream of the spillway obtained from prototype observation of a completed project, an inverse model test is conducted so as to determine the proper equivalent particle sizes of scour resistance in the model.

应用已建工程的冲刷原型观测资料，进行模型返演试验，确定该工程溢流坝下游岩基的抗冲当量粒径。

Test of the capillary equivalent radius of yarn;

纱线毛细管当量半径的测试

A unit model for fiber tows was built to simulate the value and distribution of equivalent radius of capillary voids in profiled polyester fiber tows with circular, square, triangular and double-crossed cross sections by using the self-developed fiber tow cross section mathematical simulation software.

通过建立纤维束单元模型,采用自行开发的纤维束截面数学模拟软件,模拟了圆形、方形、三角形和双十字形4种不同截面的异形聚酯纤维束内毛细空隙当量半径值的大小和分布状态,计算了液体在纤维束内的统计流量。

After solving the mathematical model of fluid unsteady flow for a horizontal well in 3D circular-boxed media,a novel equivalent radius model was presented by asymptotic analyses to the solution.

用积分变换等方法首先求解封闭地层水平井的三维不定常渗流问题,通过渐近分析得到水平井的均匀流量拟稳态当量井径模型,再利用压降叠加原理建立复杂分支水平井产能计算方法。

From the study of relation between specimen' s shape and plastic indicator for isotropic material, the concept of equivalent diameter is introduced, and the quantitative relationship between plastic indicator and the ratio of gauge length to equivalent diameter is established.

首先针对各向同性A3钢,对试件形状对塑性指标的影响进行了研究,提出了当量直径(矩形试件宽度和厚度的函数)的概念,获得了塑性指标与当量直径、试件长度之间的定量关系,在形式上获得了与圆柱形试件类似的关系。

The experimental data of pressure drop was used to calculate equivalent diameter d s by Ergun formula.

实验测定了一种新型的环柱形催化剂活性组分在其内、外表面上不均匀分布的乙烯基乙酸酯合成反应器的床层压降和该催化剂填充床的二维温度分布 ;以压降实验数据代入 Ergun公式计算了环柱形催化剂的当量直径 ds和填充床的传热参数 ,采用正交配置的方法对拟均相二维传热模型进行求解 ,得到床层的径向有效导热系数和壁给热系数。

This paper studied the influence of irregular shape catalysts with through-holes on the pressure drop of the fixed bed and determined the equivalent diameter of irregular shape catalysts with through-holes.

本文具体研究异形多通孔催化剂对床层压力降的影响 ,并测定了异形多通孔颗粒的当量直径 。

Test method for diameter and equivalent diameter of carbon fiber by microscopy

GB/T3364-1982碳纤维直径和当量直径检验方法(显微镜法)

Smith (1962) considered three alternate methods to determine an equivalent diameter of graded sediment.

史密斯（1962）提出了三种不同方法以计算不均匀沙的当量直径。

About the Characteristic Dimentions and the Equivalent Diameter in the Calculation of Resistance and Heat Transfer of Fluid Flow in Ducts with complicated Geometry

关于流动阻力与换热计算中的定性尺寸与当量直径

This author has found the most suitable characteristic dimension to be the equivalent passage diameter.

这个作者发现了更恰当的特性作为当量通道直径。

The experimental results show that liquid jet diameter has obvious effect on Sauter mean diameter( SMD) when water/ air mass flux ratio is0.82～5.48.

结果表明:当液气质量比为0.82~.48时,液体射流直径对雾滴直径有显著影响。

Measure the diameter of this circle.

量一下这圆的直径。

crown diameter measurement in aerial photo

授直径航空象片量测法

measure the diameter of something with calipers.

用测径器测量某物的直径。

equivalent effective radius of a control rod

控制棒当量有效半径

The Method and Instrument of Measuring Addendum Circle and Dedendum Circle Diameter

齿顶圆与齿根圆直径的测量及其量具

High-Precision On-Line Measuring System for Cylinder Diameter with Large Range

高精度圆柱直径大量程在线测量系统

The human eye has a pupil diameter which, of course, varies.

人眼瞳孔直径当然是可变的。

Enlarging the agitator diameter properly, NB will be increased 13.6%.

适当增加搅拌器直径,菌数可提高13.6%。

Comparative study of internal anterior chamber diameter measured by a Visante OCT and horizontal corneal diameter measured by an IOL Master

Visante OCT测量前房直径与IOL Master测量角膜水平直径的比较

Research on Flexible Online Measurement Technology for External Diameter of Large-diameter Bar

大直径棒材外径在线柔性测量技术研究

Measurement of odd boss raceway diameter of linear motion ball bearing

直线运动球轴承奇数凸台沟道直径的测量

Research on the Measurment of Diameter of Crystal Based on Image Processing Technology;

基于图像处理的直拉单晶直径测量系统的研究

MMAD (Mass Median Aerodynamic Diameter)

质量中质空气流动力学直径