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- When flow velocity decreases below the corresponding incipient motion condition, no sediment movement occurs. 当水流速度小于相应的起始运动时,将无泥沙运动。
- According to some previous results, the relationships among three common incipient motion conditions are deduced. 摘要从泥沙起动的己有研究成果出发,推导出常见的3种泥沙起动条件的转换关系。
- The authors studies on incipient motion of sediment in the recent 40 years are summarized in the paper. 本文是作者40年来研究泥沙起动公式的小结。
- The research results show that the incipient motion and the erosion of cohesive deposits are greatly influenced by the dry bulk density. 研究结果表明:干容重对粘性淤积物起动和冲刷的影响非常大。
- Considering these relationships, dozens of incipient motion conditions are united, and K of all kinds of formulas is otained commonly from 3.37 to 7.86. 利用这些关系,将国内外现有的几十种泥沙起动条件进行了统一,可得各种公式的K值一般在3.;37~7
- 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。
- Incipient motion of solid grain in solid-liquid two\|phase flow is often concerned in many petroleum technologies, such as horizontal drilling, gravel-packing and sand washing. 水平井钻井、砾石充填及冲砂等作业都涉及到固液两相流动的固体颗粒起动问题。
- Through a series of physical considerations, existing theories are reviewed and modified to find that the friction of particle in motion, , becomes smaller than that at incipient motion, . 透过升力相关理论的分析及推导,结果显示沈滓颗粒启动之后的摩擦力小于临界状态的摩擦力。
- Incipient Motion of Coarse and Fine Sediment 再论泥沙起动流速
- sediment incipient motion before breakwater 堤前泥沙起动
- incipient motion of coherent silt 淤泥起动
- Effect of grain shape on incipient motion of non-uniform sediment 泥沙颗粒形状对非均匀沙起动条件的影响
- CRITICAL SHEAR STRESS OF INCIPIENT MOTION OF SEDIMENT 泥沙起动临界切应力研究
- Incipient motion of natural settled sediment under influence of current 水流作用下自然沉积泥沙的起动
- Study on Incipient Motion of Bed Material with a Wide Size Distribution 宽级配床沙起动规律的实验研究
- Study on laws of incipient motion for pebbles with a wide size distribution 宽级配卵石起动规律研究
- It is this molecular motion that we call heat. 就是这种分子运动我们称之为热。
- The meeting carried the motion by a large majority. 会议以多数通过了这项提议。
- He used his casting vote to block the motion. 他用他的投票反对动议的通过。