2) composition of grain diameters
粒径组成
1.
Urban dust composition of grain diameters and its environmental effect;
城市灰尘粒径组成及环境效应——以西安市为例
3) grain size fraction
粒径组
1.
On the basis of statistical calculations of fields data, the dependence between Yichang s and Datong s annually average sediment discharge and that of different grain size fraction have been analyzed by considering the local income.
依据实测资料,统计计算了宜昌、大通及中间水文站各粒径组泥沙多年平均输沙量。
4) particle-size separates
粒径组分
1.
A series of batch experiments were carried out to determine the adsorption and desorption of atrazine by brown soil different particle-size separates.
采用批平衡实验,研究阿特拉津在棕壤不同粒径组分上的吸附一解吸行为。
5) mixed sand sizes
混合粒径
1.
The methods of large-eddy simulation,the motion of sand particles with mixed sand sizes and immersed boundary are used to simulate the formation and evolution of sand ripples and sand dunes.
采用大涡模拟和混合粒径群体沙粒运动算法结合内置边界方法来模拟沙波纹与沙丘的演化和发展,在平坦沙区形成沙波纹的同时,在沙丘上同样也出现了沙波纹的结构,即沙波纹的发展出现了多尺度现象。
6) hydrodynamic size
水合粒径
1.
The dispersion of nanoparticles is regarded as the guide of heat transfer enhancement,dispersion stability was token by Zeta potential and hydrodynamic size of nanoparticles in aqueous coating system,stability of aqueous ZnO was studied under different pH values,different dispersant types and mass fraction,then the function mechanism was analyzed.
纳米粉体的分散性能对提高分散体系的导热性能具有重要意义,试验选用纳米粒子在水介质中的Zeta电位和水合粒径来表征体系的分散稳定性,探讨不同分散剂种类及其浓度以及不同pH条件对ZnO水悬浮液稳定性的影响,并分析其作用机理。
补充资料：调和平均粒径
分子式：
CAS号：
性质：在混合颗粒中，直径为d1、d2、…dn的颗粒的质量分率，分别为x1、x2、…xn，则混合颗粒的调和平均直径可按下式计算：
CAS号：
性质：在混合颗粒中，直径为d1、d2、…dn的颗粒的质量分率，分别为x1、x2、…xn，则混合颗粒的调和平均直径可按下式计算：
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条