查询词典 uniform velocity

To get the steady interface, the ratio of coextrusion flow length to height is at least l-1.5._The role of smooth flow zone is important to reduce the pressure-fall. The higher surface quality of the fluid path can make the velocity field more uniform and the interfacial offset less. However, the layer interface position was almost unaffected by the convergence angle, so for the convenience of die manufacture and extruder\'s collocation, it is fit to make the contact angle as 90°with smooth corner.

在模具结构参数中，共挤出流道的长度和模具壁面光滑程度对界面有重要的影响，根据计算结果得到了方形流道共挤出段长度与高度比的取值范围；而模具入口收敛角对界面的影响不大，在实际生产中为了模具制造和共挤出机布置的方便，可采用圆滑过渡的90°入口角。

One instance of simple harmonic motion is that of the projection on any diametre of a point which describes a circular path with uniform angular velocity.

当一质点以匀角速度作圆周运动时，则它在任意直径上的投影的运动便是简谐运动的一例。

A gunboat in the lake from the bow, stern uniform suddenly while traveling forward and backward, the emission of a shell consists of two rounds relatively the same rate the quality of the same traction and resistance to change is the ship's momentum and velocity is what?...

一炮艇在湖面上匀速行驶突然从船头船尾同时向前和向后各发射一炮弹设两发炮弹质量相同相对地的速率相同牵引力和阻力不变则船的动量和速度的变化是怎样的？。。。

To improve the machining quality and the efficiency of curves, a novel Non-Uniform Rational B-Spline interpolation algorithm based on redundancy error and velocity smooth control was proposed.

为提高曲面加工的质量和效率，提出了一种基于冗余误差和速度平滑控制的非均匀有理B样条曲线插补算法。

We now imagine the axis of the rod lying along the axis of x of the stationary system of co-ordinates, and that a uniform motion of parallel translation with velocity v along the axis of x in the direction of increasing x is then imparted to the rod.

我们现在想像杆子的轴沿著静止座标系统的 x 轴置放，然后一个以沿著 x 轴并且是 x 值渐增方向的速度v、平行移动的均匀运动施加到杆子上。

It is found that water velocity vertical distribution under ice-cover is influenced mainly by the relative size of channel roughness and ice-cover roughness, less by the water depth and not sensitive to the variation of Reynold number as well, which is relatively uniform in the flow core and deviates from the logarithmic law.

结果表明：冰盖下水流流速垂向分布主要受床面与冰盖粗糙度的相对大小影响，受水深影响较小，对雷诺数变化并不敏感；在流动核心部分分布较为均匀，并不遵循对数分布规律。

Under the condition of uniform flow velocity,the differential equation for the settling distance of a sandbag is also built. It c...

建立了沙袋落距的微分方程，推导了均匀流速分布下沙袋落距的表达式，此公式可以简化为与现有公式一致的形式，通过实测资料，确定了公式中的系数。

With the same velocity ratio,stagnation point offset of the nozzles with uniform profiles was larger than that with top-hat profiles.

相同气速比下，喷嘴出口为"礼帽"分布时驻点的偏移量比均匀分布时大。

The thickness of the ice cover on the wall surface heat transfer is greater than the thickness of it on the air heat transfer form. The thickness of the ice cover on the wall surface heat transfer along the way changes slowly, but it on the air heat transfer along the way changes significantly. Reducing the entrance velocity, lowering the wall surface or air temperature, the formation of the thickness of the ice cover will increase; in the 3D circumstances, The thickness of the ice cover was relatively uniform in the import of the U-turn model, the ice cover was gradual accumulation in the convex bank when the stream traversed the import of the U-turn model, the thickness of the ice cover in the convex bank was significantly bigger than the thickness in the concave bank. The temperature field under the ice cover tends to be complex because of the existence of the secondary flows. The temperature in the convex bank is greater than it in the concave bank. Compared with the data from experiments, the laws in the numerical simulation are similar with them in the experiments

模拟结果显示：二维情况下，运用壁面传热形成的冰盖厚度大于运用空气传热形成的冰盖厚度，壁面传热形成的冰盖厚度沿程变化缓慢，而空气传热形成的冰盖厚度沿程变化明显，减小入口流速，降低壁面或空气温度等，形成冰盖的厚度都会增大；三维情况下，弯道入口处凸、凹岸形成的冰盖厚度基本相同，进入弯道后，凸岸形成的冰盖厚度逐渐增大，而凹岸的冰盖厚度逐渐减小，受横向环流的影响，冰盖下水流的温度场趋向复杂，并且凸岸的温度小于凹岸的温度；与实验室实验所得数据相比较，数值模拟研究得到的规律基本符合实验规律。

Experimentally, multi-pores are observed on leukocyte lysed with 3D electrodes and just single pore with planar electrodes. This is believed to be due to more uniform electric field of 3D electrodes than that of planar electrodes. Intracellular elements are extracted through the membrane as observed by increased intensity of Trypan blue when diluted by saline solution. We also demonstrate the lysing percentages at same flow velocity to explain the performance of 3D electrode is superior to that of planar electrode.

在实验方面，可发现细胞在3D 电极的形况下，是有多个破孔出现，有别於在平面电极的单个破洞，也发现当细胞出现破孔时，经由Trypan blue的辅助观察以及在食盐水稀释情况下，细胞内液是往外流出的，另外由裂解比率的结果，3D电极也是优於平面电极。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。