| 1. | Analysis of two typical sorts of velocity gradient equations about s
2流面的两类典型梯度方程的分析 |
| 2. | Normal - mode attenuation coefficients for shallow water with negative sound velocity gradient and sandy or muddy sediment bottom
质海底的负声速梯度浅海中简正波的衰减系数 |
| 3. | Therefore , we can conclude that the velocity gradient of fluid around a fiber is the key for its rotation
于是得出结论：纤维附近流体的速度梯度是导致纤维旋转的主要因素。 |
| 4. | Oil . it pours very slowly compared with water . it takes a greater force to stir the oil , indicating a higher shearing stress for a given velocity gradient
4如果需要较高的动力黏度时，是选择冷的润滑油或新鲜的水，为什麽 |
| 5. | In the near bed region , the turbulent intensities are elevated above those of water at a rate proportional to particle size due to collisions and velocity gradient
床面附近，颗粒脉动强度大于流体的脉动强度，且粒径越大，脉动强度越大。 |
| 6. | The ratio of the magnitude of an applied shear stress to the velocity gradient that it produces ; that is , a measure of a noncrystalline material ' s resistance to permanent deformation
剪切应力数值与其产生应变速率的比值叫粘性，用来衡量非晶材料抵抗永久变形的能力。 |
| 7. | Mathematical models of the combustor are developed by : a ) applying a modified k - s turbulence model to calculate the turbulence parameters with large swirl and axial velocity gradients in the combustor
采用了修正的-双方程湍流模型，来对燃烧室中的强旋流湍流流动进行数值模拟； b |
| 8. | If increasing drawing interval , the movement and flow range of top coal will enlarge , and the velocity gradient on flow cross - section will diminish , so that it is good for controlling the flow rate of thin sand among loose top coal
研究表明，加大放煤步距，顶煤运移流动的范围变大，流动断面内速度梯度变小，有利于控制细砂的下窜速度。 |
| 9. | Compare the measured velocity profile and analytical solution of poisoeullie flow shows a good agreement within the most part of the measured region , while the value of the former is higher near the wall resulting from the combined effects of strong flare light and velocity gradient polarization
把获得的测量结果和解析解的泊肃叶流动速度廓线进行比较后发现，在从流动中心到近壁面的大部分区域，两者吻合良好，在近壁面区域，由于示踪粒子和壁面碰撞以及壁面反射光等原因，测量值大于解析解。 |
| 10. | By performing fourier transformation , the relationship between the turbulent intensity of the particle and that of the carrier fluid was obtained which makes clear that particle size , specific gravity , velocity gradient , and the characteristic frequency of energy - containing eddies are four basic influencing parameters . it is proven theoretically that under certain conditions , the stream - wise and transverse particle turbulent intensities exceed those of the carrier fluid . based on the equations of two - phase flow , the presence of fine sediment suspension is shown to attenuate the turbulent intensity of the water
通过对细小颗粒在剪切流场中运动方程的fourier分析，得到了颗粒脉动强度和流体脉动强度之间的定量关系，表明颗粒粒径、颗粒密度、流速梯度以及紊动场含能旋涡的特征频率是影响颗粒脉动强度的主要因素，首次从理论上证明了在一定条件下，颗粒在纵、垂向的脉动强度均会超过相应的流体脉动强度，为已有的实测资料提供了合理的解释。 |
