In the intergranular spaces of rocks, however, fluid must flow around and between grains in a tortuous path; this winding path causes a resistance to flow.
然而，在粒间孔发育的岩石中，流体必须在颗粒周围的曲折通道中流动；而这种曲折通道会对其流动产生阻力。
Fluid resistance loss increases.
流体阻力损失增大。
But for the life of the tube, flow rate, as well as fluid resistance, essentially no effect.
但对管子的寿命、流量、以及对流体的阻力，基本上没什么影响。
If you want to know the pressure, you need to export the knowledge of fluid mechanics resistance calculations.
若想知道压力，则需要用流体力学的知识对出口阻力精确的计算。
It is demonstrated that the influence of fluid resistance can not be neglected and the effect of moment of inertia of plate may be cancelled.
证明了流体阻力的影响是不可忽略的，而圆板转动惯量的影响是较小的。
Because the stream moving along the bottom displaces the lighter fluid upward, a force must be provided to overcome boundary resistance.
因为沿底部运动的异重流与上部较轻的流体置换，必须产生一种力来克服边界阻力。
However, For pipes with local resistance loss, the friction head loss caused by the viscosity of fluid does exist, which may lead to the calculation error.
但是在形成局部阻力损失的管段中，还会同时伴随产生由于液体的粘性力引起的漩程水头损失，这就造成了这项损失的计算误差。
Aimed at typical shape micro-channel (fissure) under slip confine condition, it used dauby fluid motion equation and momentum equation, derived pace bout and running resistance.
针对典型形状微通道(微缝隙)在滑移边界条件下，利用粘性流体运动方程和动量方程，推导出速度场和流动阻力。
The heat pipe and heat exchanger have the advantages of high heat transmission efficiency, simple structure, safety and reliability, small fluid resistance, needing no repairing and additional power.
热管及热管换热器具有传热效率高、结构简单、安全可靠、安装方便、流体阻力小、不需维修和外加动力等优点，已经获得了广泛的工业应用。
Torque dampers utilize the principle of fluid resistance to reduce the speed of moving parts and create a smooth and soft movement.
旋转减震器利用流体阻力原理，减小运动部件的速度，使运动更加顺上、柔和。
Full bore pipeline ball valves the channel diameter and the same diameter, only a small fluid resistance, but also easy to clean pipes.
全通径球阀的通道内径与管线内径一致，不但流体阻力小，也便于管道清理。
During motion, the sphere may experience the fluid drag, as well as the resistance from the interation of the moving sphere and the channel bed.
在运动过程中，球体除受到周围流体阻力外，亦受到球体与底床间交互作用所形成的阻力。
Because starting resistance is the characteristic of mudstone, there is the ultra-pressure of fluid in the pores is inevitable if there are neither cracks nor faults.
因为启动阻力是泥质岩层的固有特征，所以，在没有裂缝或断层的情况下，孔隙流体超压就必然存在。
The flow pattern of ideal fluid, dense floating fluid and wet concrete in conveying tube are briefly analyzed in this paper. The calculation of pumping resistance is also introduced.
本文对理想流体、浓浮流体和混凝土在输送管道中的流动形态，进行了扼要分析，并对泵送阻力运算作了概述。
Because the starting resistance can express the characteristics of the mudstone, the ultra-pressure of fluid must exist in the pores if there are neither cracks nor faults.
因为启动阻力是泥质岩层的固有特征，所以，在没有裂缝或断层的情况下，泥质岩层就必然存在孔隙流体超压。
In order to acquire turbulent flow resistance rule in SK static mixer, a new numerical model of fluid resistance was put forward.
为了获得流体在SK型静态混合器中湍流流动时的流动阻力规律，提出一种新的流体阻力的计算模型。
The starting resistance is a fundamental factor for causing the ultra-pressure of fluid in pores of mudstone layers.
因此，启动阻力是泥岩层形成孔隙流体超压的根本原因。
Mud fluid can be used to reduce the resistance of advancing the culvert box; a new infilled pad is designed to solve the p.
触交泥浆可用来减少箱涵推进中的推进阻力，本文提出了一种填充垫装置，用于解决触变泥浆在实际施工中遇到的一些问题。
With water as experimental fluid, the turbulent fluid resistance in the SK static mixer was measured and the experimental formula was regressed by this experiment.
以水为实验介质，对SK型静态混合器流体湍流阻力进行了实验测量，回归出实验公式。
Although velocity varies among different plate, plate heat exchanger in the change of heat and fluid resistance calculation, is still at an average velocity to calculate.
虽然板式换热器各板间流速不等，但在换热和流体阻力计算时，仍以平均流速进行计算。
The usually called viscosity that is the resistance of a fluid to shear forces, and hence to flow.
通常所谓的粘度。它是流体对剪切力的阻力，因而也是对流动的阻力。
The introduction of ultrasonic vibration reduces the metal flow resistance and fluid pressure loss, raises the flow speed, raises the welding quality and facilitates welding of thick plates.
超声振动的引入降低金属流动阻力和流体压力的沿程损失，提高流动速度，提高了焊缝质量，也可有效解决厚板焊接困难。
Process combination shall be computed according to the change of heat and fluid resistance, in satisfies the requirement of process conditions under the determined.
流程组合形式应根据换热和流体阻力计算，在满足工艺条件要求下确定。
Whether we can correctly understand the frictional resistance characteristics of the modified dry fracturing fluid or not would influence the fracture technology's effective implementation.
对改良的干法压裂液这种非牛顿流体的摩擦阻力特性的正确认识，关系着干法压裂技术的有效实施。
Objective To study the characteristics of airway elastic resistance and changes of cytologicals, cytokines in bronchoalveolar lavage fluid (BALF) in patients with cough variant asthma (CVA).
目的探讨咳嗽变异型哮喘（CVA）肺功能气道弹性阻力和肺泡灌洗液（BALF）细胞学以及细胞因子变化的特征。
Effect of curing temperature, curing time, resistance to media, kind and volume of the sand-laden fluid, and particle size of proppant on fibre compound sand control system were discussed.
探讨了固化温度、固化时间、耐介质性、携砂液的种类和用量以及支撑剂粒径等对纤维复合防砂体的影响。
Although the resistance force increase of series nozzles makes the average energy of jet flow decreased but it lets the instantaneous energy modulated to impel more fluid resonances.
虽然串联喷嘴阻力损失的增加，使射流平均能量有所降低，但射流的瞬时能量得到了调制，激励出更大的流体振荡。
The novel high temperature fluid loss additive named KCS-53 with functions of anti-caving and salt resistance is produced from humic acid by synthesis.
以腐植酸为主要原料。通过缩合、 接枝共聚、 金属离子螯合和磺化等系列反应制得了高温抗盐防塌降滤失剂K CS-53。
OBJECTIVE To determine the distribution and antibiotic resistance of bacteria isolated from cerebral spinal fluid in neurosurgical patients.
目的监测神经外科患者脑脊液致病菌流行病学分布及耐药状况。
Full diameter structure of ball valve ensures the conformity of inside diameter of passage and pipeline, with the fluid resistance minimized and easy for cleaning pipeline.
全通径结构保证通道内径与管线内径一致，不但使流体阻力最小，也便于清洁通道。
应用推荐