Bottom flow structure is changed because of the existence of the non uniform sediment.
通过考察水流结构的改变，研究了非均匀沙的起动。
And then, according to the condition of limit equilibrium of forces, a formula about non uniform sediment incipient was deduced.
并以该流速公式为基础，按照颗粒极限平衡的受力得出了非均匀沙的起动公式。
Based on both shear force and stream power and through theoretical derivation, the incipient motion critical conditions of cohesionless uniform sediment are achieved.
通过理论推导，得出基于剪切力和水流功率的均匀沙起动临界条件表达式。
The formula for calculating the incipient motion condition of non-uniform sediment has been established by considering the equivalent grain and the relative exposure degree.
阐述了泥沙起动机理，通过对等效粒径概念及表达式的引入，推得了泥沙起动公式。
Entrainment mechanism of sediment with mixed grain sizes is different from that of uniform grain size.
混合粒径条件下沉积物的起动机理不同于均匀粒径条件下沉积物的起动机理。
Thirdly, because of the centrifugal force, particles in the magnetorheological fluid sediment at a speed faster than the assumed low and uniform speed in the theoretical sedimentation model.
采用了离心力加快沉降速度，粒子的沉降速度大，均匀低速的假设条件不再满足，理论计算模型和实际情况偏差大。
A method is proposed for calculating the bed suspended load ratio of transport rate both uniform and non uniform sand in coast sediment movement as well as for calculating that of channel deposition.
提出了海岸泥沙运动中均匀沙和非均匀沙输沙率推悬比和航道淤积推悬比的计算方法。
The sediment transport resulted from self adjustment of the channel bed due to backwater effects differs from that occurring in a uniform flow.
三角洲河道动床之自我调整作用，因水库水位之回水影响，其输沙特性有异于明渠均匀流。
Oolite beach carbonate reservoir of Feixianguan Formation in Luojiazhai, NW Sichuan Basin is a platform edge facies sediment with massive thickness and uniform distribution.
川东北地区罗家寨飞仙关组鲕滩储集层为碳酸盐岩台地边缘相沉积，具有厚度大、分布稳定的特点。
After pointing out some defects of a kind of sediment carrying capacity formulas, a summary of the laws of non-uniform suspended load transport is given.
指出了一类挟沙能力计算公式存在的问题，总结了非均匀沙实际输沙过程的一般规律。
After pointing out some defects of a kind of sediment carrying capacity formulas, a summary of the laws of non-uniform suspended load transport is given.
指出了一类挟沙能力计算公式存在的问题，总结了非均匀沙实际输沙过程的一般规律。
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