| 1. | Natural sediment particles are not spherical .
天然泥沙颗粒不是球状的。 |
| 2. | The size of a sediment particle alone is usually not sufficient to describe it .
单颗泥沙的粒径通常不足以描述其性质。 |
| 3. | Study on soil and sediment particle size distribution and nutrient loss
土壤及泥沙颗粒组成与养分流失的研究 |
| 4. | Experimental study on effect of positively charged ion in river on the velocity of sediment particles
阳离子浓度对泥沙沉速影响实验研究 |
| 5. | Effect on the flocculation sedimentation velocity in different conditions of cation concentration by concentration of sediments particles
不同离子浓度下泥沙浓度对絮凝沉降的影响 |
| 6. | The floe settling velocity of sediment particles is taken as the function of current velocity , salinity and suspended sediment concentration
泥沙颗粒絮凝沉降速度考虑了流速、盐度、含沙浓度的影响。 |
| 7. | Real - time surface velocity field measurement system and three - dimensional particle velocity measurement system are developed . systematic experimental research on the movement of coarse sediment particles in open - channel flows was carried out using developed system
本文研制开发了表面流场实时测量系统和颗粒三维运动测量系统，并采用颗粒三维运动测量系统对明槽水流中粗颗粒的运动进行了系统的试验研究。 |
| 8. | Based on the analysis of characteristics of sediment particle concentration distribution , it is pointed out that the diffusion theory can describe sediment concentration distribution in main flow region but cannot explain sediment concentration distribution law near bottom because of the existence of sediment colliding shear stress
摘要在分析泥沙颗粒含量分布特性的基础上，指出扩散理论能较好地描述主流区的泥沙含量分布规律，但在近底流区由于泥沙碰撞切应力的存在，使得扩散理论不能解释此区域的泥沙含量分布规律。 |
| 9. | Based on the topographic features and data of sediment particle size of bed load at the fluctuating backwater reach of liujiaxia reservoir , the streamwise variation and variation process of median diameter of bed load during silting and scouring periods of the fluctuating backwater reach are analyzed , and it can be seen that the turning point for the sediment diameter variation from coarse to fine is located at the outlet of shigou gorge of the fluctuating backwater reach
摘要根据刘家峡水库变动回水区的河段地形特征和历年河床质泥沙粒径级配资料，分析了变动回水区河段淤积和冲刷时，河床质泥沙中值粒径的沿程变化和历年河床质泥沙中值粒径变化过程，并指出粒径分布由粗变细的转折点在变动回水区寺沟峡峡口处。 |
