Equivalent grain size

Relative exposure degree and equivalent grain size of non-uniform sediment

泥沙颗粒暴露度与等效粒径研究

Furthermore , the concept of equivalent grain size and the method for calculation is suggested .

同时提出了等效粒径的概念及其计算方法。

Calculations of exposure degree , exposure coefficient and equivalent grain size for grains with various size located at different position relative to the riverbed are carried out .

并对不同粒径，在床面不同位置的暴露度、暴露度系数及等效粒径进行了计算。

Aiming at the grain of pebble and its incipient characteristic , considering the influence of pebble shape and the relative exposure degree , the formula of calculating the incipient velocity of pebbles is deduced based on the equivalent grain size of pebble and the rolling incipient mode .

本文针对卵石颗粒及其起动特点，考虑卵石颗粒形状的影响，引入形状系数及相对暴露度系数，从卵石的等效粒径出发，采用滚动起动模式，导出了卵石起动流速公式。

Effects of Zinc Equivalent and Grain Size on Corrosion Fatigue Properties of High-Strength Cast Brass

锌当量及晶粒度对铸造高强度黄铜腐蚀疲劳性能的影响

The technology of image analysis is applied to measure the equivalent diameter and grain size distribution of six soil samples . The fractal dimension characterized by grain size distribution is obtained accordingly .

应用计算机图像分析技术，对6个典型土样测定土壤颗粒的等效直径和分布规律，给出用粒径的数量分布表征的土壤分形维数。