流体运动的

Studying from dynamic hydraulics, in consideration of the friction impact, differential equation of motion and equation of continuity have been established, from which transient velocity equation and pressure fluctuation equation describing viscous fluid micro-vibration inside of a string have been deduced out.

从动态水力学的角度出发，建立了考虑摩擦力影响的流体运动微分方程和连续性方程，得到了具有粘滞性流体在管柱内微振动时的瞬态速度和压力波动方程。

It is seldom reseached the mechanism of highspeed and long-range. On the basis of detailed investigation on the Touzhai landslide, the author have expatiated on the environment condition, studied the moving characteristics of each stage, the laws of friction coefficient of the sliding surface in the set-out stage and the erodynamic effect in the short-range, analyzed the hydrokinetics mechanism of highspeed and long-range.

本文在去现场详细调查的基础上，阐述了头寨滑坡的环境条件，研究了头寨滑坡全程各个活动阶段的运动特征，通过试验研究了头寨滑坡启程活动阶段滑面高速摩擦的规律和近程活动阶段滑坡凌空飞行的空气动力学效应，从流体动力学的观点分析了头寨滑坡高速远程的流体动力学机理。

The more realistic ones often try to mimic the motion of a real water body by solving differential equations, approximating the physical laws of hydrostatics and hydrodynamics, and offering full interactivity between the player and the water.

更逼真的方法通常尝试通过求解微分方程去模拟真实水体的运动，近似流体静力学和流体动力学的物理规律，并且在玩家和水之间提供完全的交互。

The theoretical and computational results show that an important reason resulting in eccentric wear of the inner cylinder and the pumping rod lies in the nonuniformity of the stress distribution on the outwall of the inner cylinder which yields excentralization effect of the pumping rod when swabbing fluid flows in eccentric annuli with the pumping rod moving axially in a well.

在实验上，通过不同重量百分比浓度的HPAM水溶液在内管做轴向往复运动的偏心环空中非定常流实验，把由理论公式算得的时间平均流量与实验中测得的时间平均流量做了比较，验证了本文数值计算幂律流体在内管做轴向往复运动的偏心环空中非定常流方法的正确性；上述的理论与计算表明，抽油机井杆管偏磨的一个重要原因是，在聚驱工况下，抽汲液体在抽油杆做轴向运动的井筒中流动时，抽汲液体作用在抽油杆外壁上的压力分布的不均匀性所引起的抽油杆在井筒中的偏心效应。

The universal research in microscopic tribological mechanism of contact, adhesion, friction, molecular-level solid-liquid interaction, tribochemistry, triboelectricity etc, in the interaction among goetmaterials or between goematerials and artificial materials during geomotion, were reviewed and analyzed.

2综述和分析了地质运动过程中普遍存在的微观摩擦机制如接触、粘着、分子级流体-固体相互作用、摩擦化学、摩擦电性等的研究概况，认为地质摩擦学的研究应具有宏观和微观两个层次，对地质运动的微观机制的研究将促进对地质材料的地球物理、化学和力学性质的研究，并有助于对各种尺度上的地质运动过程的理解

By definition viscosimetry viscosimetry refers to prevent fluid flow in nature, is a fluid Intermolecular interactions impede the measurement of molecular relative motion, often on a per unit area of the shear stress.

1粘度在定义上粘度是指阻止流体流动的一种性质，是流体分子间相互作用产生阻碍分子相对运动的量度，常以每单位面积所受的剪切应力来表示。

As the study shows, the signal of recoil velocity is selected by the velocity sensor, then the electric current of magnetic liquid buffer is confirmed through the contrast and calculation of the control system, and the movement resistance is adjusted by changing the viscosity of magnetic liquid medium, so the velocity fluctuation of bolt is reduced effectively.

研究结果表明，通过枪管速度传感器，采集发射时的后坐速度信号，经控制系统的对比和解算，确定磁流体缓冲装置的励磁电流，改变磁流体介质的动力粘度，调节自动机运动阻力，可以有效地减小自动机前冲击发速度的波动。

The movement of plunger piston,the compressibility of the liquid and the leakage in the clearance between the plunger piston and pump barrel were comprehensively considered,and a new continuous flow equation of the fluid in the pump cylinder was setup.

综合考虑柱塞的运动规律、泵筒内流体的可压缩性、柱塞与泵筒之间的间隙漏失量，建立了泵筒内流体流动的连续流方程。

A motion model was built for the spiral-grooved endoscopic micro-robot working inside the lumen of human body.

针对人体内腔粘液为非牛顿流体的特点，推导了非牛顿流体的变形雷诺方程，建立了螺旋内窥镜机器人在人体内腔中运动的数学模型。

The methods applied mainly include Euler method and Lagrangian method, for simulating the fluid phenomena such as smoke, fire, explosion, wave, bubble, free surface etc.

本文主要探讨基于物理的流体模拟计算机动画，其中涉及的现象包括烟雾[1]、流体运动界面[23]、波浪[4]、气泡[5]、火焰[67]以及爆炸[8]等。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。