管道阻力特性研究是管道水力输送固体物料最基本的问题。
The flow resistance is the basic problem in pipeline hydraulic transport of solid particles.
对于调节阀，由于管道阻力等因素的存在，阀门总是存在流量特性畸变。
Thanks to there always exist the factors such as the pipeline resistance and so on, the flux characteristic of valve will become aberrance.
作为管道输送工程设计的核心内容之一，管道阻力特性的研究具有重要意义。
As one of the key points in the design of a pipeline transport, study on the flow resistance of pipeline sand transport is of great significance.
应用该计算表可快速、确地计算出冷却水系统的管道阻力，使用起来非常方便。
It is convenient to use the table to calculate cooling water system's pipe resistance.
也使用气泵，但作用仅限于在管道中制造半真空，以减小胶囊运行的阻力。
Air pumps are involved, but their role is limited to creating a partial vacuum in the pipes in order to reduce resistance to the capsules' movement.
压出，此时液体带有克服压出管道系统所有阻力所必需的压力从泵中排出。
Press out the liquid at this time to overcome the pressure out of pipeline systems with all the necessary resistance to the pressure from the pump discharge.
所以胶囊列车在管道内部行进时不会遇到太大阻力，这样就可以用很少的能量行驶非常快。
So now the capsule travelling inside the tube doesn't encounter as much resistance, and therefore can travel really fast with very little energy.
血液要能够循环无阻，心脏就必须产生足够的压力来克服管道越来越小所造成的阻力。
For blood to circulate, the heart must generate enough force to overcome the resistance it meets as the passageways become smaller and smaller.
所提出的减阻机理及工程减阻方法对实现高粘度流体的低阻力管道输送具有重要的理论指导意义和工程应用价值。
The proposed drag reduction mechanism and drag reduction method are valuable both theoretically and in engineering to realize the low drag pipeline transport of highly viscous fluid.
分析了目前工业管道设计中存在沿程阻力计算不够准确这一现象的原因及由此产生的后果。
Analysis the causes and results of the phenomenon that calculating of frictional resistance in industrial pipe-line design is not accurate enough.
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。
Full bore pipeline ball valves the channel diameter and the same diameter, only a small fluid resistance, but also easy to clean pipes.
管道相交处的局部阻力系数通常由实验确定。
The local resistance coefficient at intersecting pipes corner is determined usually by experiments.
另外，本文还分析比较了S型和U型管道的阻力变化规律，提出可用线性叠加原理计算的判据。
In addition, variations in resistance of S-like and U-like pipes are analyzed and compared. And criteria suitable for linear superposition calculation are also presented.
水平管道粗颗粒浆体阻力损失的研究在矿业工程方面很有实际意义，而目前这方面的计算模型大多还不完善。
It is significative in mining Engineering to investigate the friction loss of coarse particle slurry in horizontal pipeline, but the research on this respect is not perfect.
从理论上对两个定义下的矩形管道单位长度摩擦阻力进行了分析和论证。
Friction resistance of unit length of rectangular pipeline under the two definitions was analyzed and demonstrated theoretically.
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。
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.
在给水管网平差计算、工况分析时要实测管道的阻力系数。
When analyzing the water network performance, it is necessary to test the resistance coefficient of water pipe.
管道摩擦力是指由管道引起的流动阻力，作为一个常用原则，最好是使用最大的实用的管道尺寸以避免在水泵性能方面的损失。
Pipe friction is the resistance to flow caused by the pipe. As a general principle, it is better to use the largest practical pipe size to avoid losses in pump performance.
真空管道系统就是在现有的轨道交通基础上减小了空气阻力，其本质还是属于轨道交通的范畴。
Now, this system is called Evacuated Tube Transportation (ETT), which monishes the air resistance of rail transit, but it essentially belongs to the category of rail transit all the same.
水平烟管采用弹簧吊、中心滚动支座，可减少管道热膨胀移动时的摩擦阻力；
A horizontal smoke pipe adopts a spring suspender and a central roller support, and the friction resistance generated by the thermal expansion the pipe when moving is reduced.
通过数学解析方法，重点考虑回拖过程中管道弯曲段弯曲阻力的影响，建立了铺管阻力新计算模型。
The paper uses the mathematical analysis method and considers the effect of banding resistance in pulling process to set up the new calculation model.
上述管道运动的阻力计算公式可直接应用于采矿系统的载荷分析。
Such calculation formula for resistance to motion also can be directly applied into the load analysis for mining system.
通过相似模拟的方法研究了新型胶体在管道中流动的阻力系数。
Through hydrodynamic similitude experiments, coefficients hindering flow of the gel in duct is calculated.
在管道通风系统中的湍流区内，震荡波动的阻力气压与推力气压之间的关系已被阐述。
The relationship between the fluctuating drag and lift pressures in the turbulent area within a flow duct is given.
通过四支压力传感器所测压力值可以计算出管道的阻力系数。
This coefficient can be calculated with the pressure values from four pressure sensors on the pipe.
本文介绍了全尺寸管试样测定含裂纹管道结构J_R阻力曲线的测试技术。
The experimental technology for determining JR curves by full-scale pipe specimens was introduced.
根据流体在管道中的流动状况，分析了阻力压降损失和离心压降损失。
According to the flowing conditions of the fluid in rotator, the factors causing the pressure drop due to the frictional and centrifugal forces are analyzed.
引入减阻剂后，可降低湍流磨擦阻力，提高流速。增大输送距离和提高管道输送能力。
The adding of the drag reduction agent can reduce the friction force of the current and increase the flow speed as well as increase the conveying distance.
引入减阻剂后，可降低湍流磨擦阻力，提高流速。增大输送距离和提高管道输送能力。
The adding of the drag reduction agent can reduce the friction force of the current and increase the flow speed as well as increase the conveying distance.
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