1)friction velocity摩阻流速
1.Experimental analysis on influence from sudden change of roughness of open channel bottom on friction velocity of turbulent flow and wall shear stress;明渠渠底糙率突变对紊流摩阻流速及壁面切应力影响的试验分析
2.Experimental study on friction velocity and velocity profile of open channel flow;明渠均匀流的摩阻流速及流速分布
3.Based on the principle that the bed shear stress and friction velocity of the grass cover in the model should equal those of actual condition in which grass cover is destroyed due to scouring,an experimental equipment was designed to simulate the scouring flow with high velocity in actual rivers and to measure the hydraulic parameters during the scouring process.基于模型和原体草皮冲刷破坏时床面切应力和摩阻流速应该相等原理,研制了一套可用于模拟实际河道中的大流速冲刷水流,并测定冲刷过程中植被水力学参数的试验装置。
英文短句/例句
1.Roughness length during the flood phase is larger than that during the ebb phase, whilst shear velocity during the flood phase is smaller than that during the ebb phase.涨潮阶段床面粗糙长度大于落潮阶段，涨潮阶段摩阻流速小于落潮阶段。
2.head of fluid frictinal loss流体摩擦阻力损失压头
3.Apply the formula to the real project, and calculate the values of the economic specific frictional resistance, optimal pipe diameter and velocity on different heating-supply scale under current prices.运用典型实例,根据市场现行价格,得出不同供热规模下的经济比摩阻值、济管径及经济流速。
4.Research on Development of the Connection Equation on Friction Factor of Fluid Resistance流体阻力摩擦系数关联式演变的探讨
5.Study on friction factor and eddy viscosity of overbank flows漫滩水流摩阻因子与涡粘性系数的研究
6.Study on Flow Structure and Friction Characteristics of Near Bottom Layer in Estuarine and Coastal Waters;河口海岸近底层水流结构及摩阻特性研究
7.Effect of blowing and suction on friction drag of wall turbulent boundary layer吹吸扰动对壁湍流边界层摩擦阻力的影响
8.Comparison and Improvement of the Connection Equation on Friction Factor of Fluid Resistance流体阻力摩擦系数关联式的比较与改进
9.Prediction on wellhead outflow performance by dynamic friction coefficient of gas wells利用气井动态摩阻系数预测井口流出动态
10."Viscous friction is the fiction, or resistance to relative motion, between adjacent layers of liquid. The resistance of motion between these oil layers is called viscous friction. "粘性是液体流层问相对运动而产生的摩擦力或阻力。油层间所产生的运动阻力称为粘性摩擦力。
11.The Study of Transformer s DC Resistance Rapid Measurement Method;电力变压器直流电阻快速测量的研究
12.Development of Rapid Inductive Coils of the Directcurrent Resistances Measurement感性绕组直流电阻快速测试仪的研制
13.Experimental study on negative skin friction and mechanical behavior of high-speed railway CFG pile-raft composite foundation高速铁路CFG桩-筏复合地基桩侧负摩阻力及其受力特点的试验研*究
14.Field Observation of Dust Threshold Friction Velocity on Different Types on Farmland Surfaces不同类型农田地表粉尘起动摩阻风速的野外观测
15.Current-following PWM Control Strategy for Self-commutating Low Speed Reluctance Motors;自激换流低速磁阻电动机电流跟踪型控制策略
16.Friction is low in air, and the original kinetic energy of the air in the nozzle can not be lost quickly enough.由于空气的摩擦阻力较小,气流出喷嘴时的动能不会很快消失。
17.Study on the Friction Resistant in the Hollow Stator Bar of Evaporative Cooling Generator;蒸发冷却电机空心导线内气液两相流动摩擦阻力的研究
18.Establishment of Thermanl Model for the Damping Performance and Simulation for the Flow Field of the Motorcycle s Shock Absorber;摩托车减震器阻尼特性热力学模型的建立与流场模拟分析
相关短句/例句
shear velocity摩阻流速
1.Calculation methods of shear velocity in open gravel channel;卵砾石河道摩阻流速计算方法探讨
2.An improved theory is developed to illuminate distributing density of arbitrary shaped roughness elements on a wall and how wind velocity above the turbulent boundary layer in?uences shear velocity.从学术观点和方法上将研究边界层流动对粗糙壁面的摩擦切应力与研究均匀沙流体起动风速统一了起来;;既关心了布满均匀沙的沙床上颗粒的流体起动风;;又关心了稀疏分布着均匀颗粒的光滑地表上沙子的流体起动风速;;得出了用边界层外参考风速表示的流体起动风速随颗粒分布密度的增加呈指数增长规律;;而用摩阻流速表示的流体起动风速与颗粒分布密度的二分之一次方成正比的规律;;与有关实验数据取得一致。
3.Three hydraulic parameters of shear velocity (u*), roughness length (z0) and bed shear stress(τ0) in natural river flow are derived from logarithmic flow velocity profiles by fitting a straight line by ordinary least squares regression to the profile.根据天然河流对数流速分布公式,采用最小二乘法建立流速u依水深的对数lnz 的线性回归方程以估计底部摩阻流速u*、粗糙长度z0和底部切应力τ0这三个水力学参数,并给出了估计其误差的数理统计方法。
3)friction velocity of bucket反弧段摩阻流速
4)comprehensive friction flow velocity综合摩阻流速
1.The comprehensive friction flow velocity, which is capable of representing the lake current and wave, was selected Lake Taihu hydrodynamic express index.选取能代表湖流和波浪综合作用的综合摩阻流速作为太湖水动力的表征指标,建立藻增长率和综合摩阻流速关系。
5)roughed wind speed摩阻速度
1.8) for the wind speed flow chart and it systematically analyses the benefit of wind-breaking and sand-binding of salix deserts barrier with roughness length and roughed wind speed.0)软件作出沙障体系内外的风速流场图,并运用粗糙度(z0)、摩阻速度(u*)等物理参数,对复式沙柳沙障的防风效益和阻沙作用进行了系统研究。
6)friction wind velocity摩阻风速
延伸阅读
环空摩阻分子式：CAS号：性质：又称环空摩耗或环空摩阻。在环形空间部分发生的压力损失。
