您要查找的是不是：
- incipient motion velocity 起动流速
- 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。
- Parameters of structure and motion velocity were given to re-duce the broken shoots through the optimizational designing of the cutter. 通过对切割部分的优化设计，找到了减少碎片率的结构参数。
- 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。
- The ratios of mitral valvular ring motion velocity for evaluating the left ventricular diastolic function by DTI is better than those of the conventional mitral flow velocity spectrum. 结论 慢性阻塞性肺病会引起左室舒张功能异常,DTI技术检测二尖瓣环运动速度之比评价左室舒张功能优于二尖瓣口血流流速曲线。
- Methods The segmental left ventricular wall motion velocity was measured in 45 normal subjects and 48 patients with CAD,and the parameters of QTVI were analyzed between the two groups. 方法应用QTVI技术对45例健康者(正常对照组)及48例冠心病组(异常组)进行左室壁各段心肌运动速度检测,并将异常组与对照组进行显著性检验。
- 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
- Critical velocity model for grain incipient motion in consideration of the randomness of grain location 考虑位置随机性的固体颗粒起动临界流速研究
- 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。
- mitral annulus motion velocity(Sa) 二尖瓣环收缩期峰值速度（Sa）
- DTI is useful in assessing right ventriuclar segment motion velocities and observing variation among different ages. 应用 DTI技术检测右室壁运动速度 ,观察各年龄组间的变化具有应用价值
