1) 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
2) grain size distributions
底质粒径组成
3) seabed and suspended sediment
悬沙粒径组成
1.
Grain size distributions of seabed and suspended sediment samples from several sites on the Dafeng tidalflat,northern Jiangsu coast,collected in July and August of 2002 and 2003,were analyzed.
悬沙粒径组成在潮周期内的变化有两种模式,一是稳定型,悬沙级配的时间和空间变化很小;二是双峰型,悬沙级配的时空变化显著,粗细峰强度不断转换。
4) silt fraction
泥沙粒径组成
5) 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。
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