1) silt fraction
泥沙粒径组成
2) clay and sand grade
泥沙粒度组成
1.
The reducing infiltration effects of the different clay and sand grade were studied further.
利用大田浑水间歇入渗试验资料，探讨了浑水间歇入渗特性及其减渗效果；研究了不同泥沙粒度组成对浑水连续和间歇入渗规律的影响；在此基础上，提出了泥沙粒度组成对浑水入渗的影响主要取决小于０。
3) sediment grain size
泥沙粒径
1.
Errors analysis of testing sediment grain size by the methods of laser way and extinction sedimentation way;
激光法与消光沉降法测试泥沙粒径误差分析
4) grain size of sediment
泥沙粒径
1.
Thirty-six river basins, where the data of measured grain size of sediment are available, were chosen for an analysis on relationships between grain size of sediment and rainfall features in the middle reaches of the Yellow River.
以黄河中游 36个有泥沙粒径资料的水文测站流域为样本 ,在不同自然地理类型流域划分的基础上 ,建立了流域泥沙粒径特性与降雨特性的关系。
5) sediment diameter
泥沙粒径
1.
Distribution of sediment diameter of bed load at the fluctuating backwater reach of Liujiaxia Reservoir;
刘家峡水库变动回水区河床质泥沙粒径分布
2.
According to near 1 000 sets bed-load transport data, the problem about the influence of sediment diameter on bed-load transport has been analyzed by multi-regression method.
根据近1000组推移质输沙试验资料,用多元回归的方法就泥沙粒径对推移质输沙率影响的问题进行了研究。
6) 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。
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