velocity head
英 [vəˈlɒsəti hed]
美 [vəˈlɑːsəti hed]
速度（压）头；动压（头）
双语例句
- The liquor is pumped through a large nozzle and the velocity head is utilized to draw the gases to be absorbed into the liquid.
液体用泵送经一只大的喷头，利用速度变化产生的压差将待吸收气体带到液体中。 - Study on variation of cerebral blood flow velocity after severe head injury with TCD;
血液在血管内流动的线速度，即一个质点在血流中前进的速度。 - Healthy individuals demonstrated a more periodic gait with regular and higher velocity foot kicks and faster torso and head movement than impaired individuals when completing a cognitive task.
完成认知测验时，与受损害个体相比，正常个体步态呈规则周期性、抬脚速度更快，并且头部和躯体的运动也更迅速。 - This example demonstrates that a low trim exit velocity head does not result in a low noise level in the valve, unless the valve outlet mach number is low.
这个例子显示，低阀门内件节流出口速度头不会保证阀门处于低声压级，除非阀门出口马赫数很低。 - Reconstruction of the basement velocity image based on head wave
利用首波重建基底速度图象 - The Changes and Implications of Blood flow Velocity of Vertebral Arteries During Rotation of Head
颈部旋转手法对椎动脉流速影响的研究 - And it can forecast the distance to detonation and stress histories of PBX-9404, as well as the threshold velocity and SDT process of different head geometry projectile impacting.
利用改进的模型，可以很好预测PBX9404炸药的起爆距离和压力历史以及不同头部弹丸撞击起爆的阈值速度和起爆过程。 - A numerical approach of determining flow parameters of thick three dimensional boundary layer on ship hulls is presented by using the partly-parabolic mode of simplified Navier-Stokes equations with Coles velocity profiles and Head entrainment equation and with orthogonal curvelinear coordinates and the integral-differential computation.
将描述船体粘性绕流的完整的Navier－Stokes方程简化为部分抛物线模式，辅以Coles速度剖面和Head渗入方程，应用流线坐标系中的积分－差分算法，求解绕船体三维边界层的流动参数。 - In the paper, the differences between the unsteady and quasi-steady velocity and pressure distributions around the probe head and in the pressure-holes are also given.
文中还给出了高频振荡流中测压孔内外非定常与准定常流场分布之间的差异。 - Shape Estimation of Piles by Matching Velocity Response of Pile Head
用拟合桩顶速度响应的方法估计桩身形状 - Air velocities, velocity pressure head and total pressure head were measured by electrical anemometer, Pitot tube and the inclined manometer respectively.
风速、动压、全压分别采用了热电风速仪、皮脱管和倾斜式微压计测量。 - Study on Variety of Vertebral Artery Flow Velocity Before and After Head Movement in Sympathetic Cervical Spondylosis Patients with Unilateral Vertebral Artery Stenosis
交感型颈椎病伴单侧椎动脉狭窄患者头颈部活动后椎动脉血流的观察 - Based on system analyses the main factors which affecting overflow operating condition of overflow earth-rock cofferdam, the condition of overflowing is measured by the current velocity head of cofferdam downstream slope blacks.
本文主要针对过水围堰与隧洞联合泄流的施工导流方式，通过系统分析影响过水土石围堰溢流工况的主要因素，采用下游护坡尾水位流速水头作为衡量围堰溢流工况的指标。 - The critical velocity and the head loss gradient of slurry pipelines are important design parameters.
临界速度和水头损失坡降是浆体输送管道的重要设计参数。 - The influence of casting temperature and velocity on the slag deposition of ingot head
注温和注速对钢锭头部积渣的影响 - And the corresponding solutions of the displacement and velocity response function at the head of the pile were derived in frequency domain.
在频域中，得到了桩顶位移和速度的响应函数。 - Based on groundwater dynamics in porous media, seepage state about solution in leaching heap was analyzed, and its criterion and the basic relation between flow velocity and water head gradient in each state were put forward.
在多孔介质地下水动力学的基础上，分析溶浸液在浸堆内的渗流状态，并提出渗流状态判据、各自状态下的渗流速度与水力梯度基本关系式。 - The technology of CZ-2F escape vehicle ′ s maximum velocity head simulated flight test
CZ-2F逃逸飞行器最大速度头模拟飞行试验技术 - There are four emphases in-research, for instance, flow state in pipeline, distribution of concentration and velocity, deposition-limit velocity and calculation of flow resistance or head loss.
研究重点主要集中在管内流动状态、浓度和速度分布、临界流速及阻力损失计算四个方面。 - The influence factors of casting temperature and casting velocity on slag deposition in ingots head were investigated by industrial experiments.
通过工业实验，研究了注温和注速这两个主要浇注工艺条件对钢锭头部积渣的影响规律。 - Strong radar echoes and positive-negative velocity and head wind area are indicative to the heavy rainfall event.
强雷达回波和正负速度对、逆风区等特征对强降水具有指示意义。 - It can be seen from this article that the two methods have demonstrated the working capacity for calculation of frictional force and thermal load on surface of a hypersonic winged flight vehicle, which moves in dense atmospheric layers on a trajactory with stationary values of velocity head.
由文可见，对于在稠密大气层内，沿轨道运行头速度恒定的高超声速有翼飞行器，能够用本文所采用的两种方法计算其表面摩阻和热载荷。 - If the duct is designed as a diffuser it will draw more fluid through it and will also increase the available pressure drop across the turbine by recovering some of the velocity head downstream as pressure head.
如果导流罩设计成扩张式，将吸引更多的流体并将部分下游的速位差转化为水轮机的压位差，水轮机则成为扩散器。 - The model assumes that every vehicle tends to keep expected time-headway. The vehicle synchronous updates its velocity by estimating the velocity of head vehicle and the distance-headway.
该模型假定行驶车辆都趋向于保持期望车头时距，并通过对前车速度的估计，对车速进行同步更新。 - The parameters of Huang-he River sand is tested by ignoring the damping of pile. Further more, the effect of pile-side-soil on the velocity wave of pile head is analyzed while the pile is embedded entirely in soil.
忽略桩身阻尼的影响，测定桩底架空、桩侧为黄河砂子的参数，并进一步分析桩身全埋入下桩侧土对桩顶速度响应的影响。 - The pressure difference of counter flow will influence the reflux flow, the velocity of closing and the force on valve head and seat directly.
逆流压差的大小直接影响回流量的大小和阀门的关闭速度以及阀头阀座的受力。 - The velocity head of outflows decrease, that is, the energy loss of outlets drop.
出流速度头减小，出口能量损失减少，旋流器的压降降低。 - At the same time, the theory that concerns the capillary hydraulics in micro-irrigation system neglected the velocity head is drawn on the basis of analysis.
同时，通过分析论证给出了微灌系统中的毛管水力学忽略流速水头的理论依据。