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.
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。
While fluids flow through a pipe, dynamics loses because of the surface friction of pipe.
流体流经管道时，由于管道表面的摩擦力而产生力头损失。
Newton fluid's flowing in special pipe is analysed, it is gained that some factors affect the friction coefficient of flowing fluid in special pipe.
主要通过对流体流过非圆形直管的流动分析，得到影响非圆形直管摩擦系数的因素。
The swatch values of friction factor of three kinds of precast buried heating pipe and backfilling sand is calculated.
通过对施工变量、运行变量的工程测量及计算得到三种规格的预制直埋供热管道与回填砂的摩擦系数样本值。
Insulation friction in the pipe thermal expansion, well counteract thermal expansion forces can effectively restrict the pipeline along the axial elongation, improved safety Buried heating pipe.
保温层摩擦力在管道受热膨胀时，能很好的抵消热膨胀力，可以有效地限制管道沿轴向伸长，提高了供热直埋管道的安全性。
The more pipe have temperature difference, the more pipe elongation and insulation friction.
温差越大，无保温管与有保温管伸长量之差越大，则保温层摩擦力越大；
The experiment is assumed that the elastic modulus of the steel pipe equal and constant, the insulation layer friction proportional to the difference of elongation.
若实验过程中假设钢管的弹性模量和钢材的弹性模量相等且为常数，则保温层摩擦力和无保温管与有保温管伸长量之差成正比；
Finally the engineering design suggestion of three commonly used diameter pipe segments is given through changing their length and the friction coefficient between the slip block and the soil surface.
最后提出了调整隔震管段长度及支座滑块与地面之间摩擦系数，对三种常用管径管道跨断层设计的建议。
The conditionality between the flow rate and the pipe diameter is discussed when the friction factor is fixed.
文中还分析了在摩擦阻力系数一定的情况下，流量与管径的制约关系。
Based on reliability theory, the specification of accelerate life test for friction welded joints in boiler snake pipe was worked out.
以可靠性理论为基础，制定了电站锅炉蛇形管焊接接头的加速寿命试验规范。
The traditional quasi - steady friction model can not be accurately described the real transient problems in transient pipe flow.
在液体管道瞬变流计算中，传统的拟恒定摩阻模型不能准确描述瞬变流的真实物理现象。
The mechanical properties and metallographic structures of the friction welded drill rod and the hot upset forged drill rod pipe are compared.
本文叙述了这种钻杆的焊接性，并与采用热镦粗工艺生产的钻杆管体金相组织和机械性能进行了对比。
The traditional quasi-steady friction models are proved to be inaccurate in transient pipe flow because they underestimate friction losses in transients.
在液体管道瞬变流计算中，传统的拟恒定摩阻模型不能准确描述瞬变流的真实物理现象。
While flowing through a pipe, the fluid is subjected to the loss of head due to the friction of the inner surface of the pipe against it.
流体流经管道时，由于管道表面的摩擦力而产生力头损失。
Then, improving measures about instrument pipe, air-power coming out of earth, reducing friction were emphasized.
着重介绍了对切土头、气压出土、减摩等工艺的技术改进措施。
From the technology of reducing friction slurry and the relay jacks, the jacking force of long pipe jacking has been analyzed.
从触变泥浆减摩技术和中继接力技术两个方面对超长距离顶管施工中的顶推力进行了研究。
Analyses parameter have inclined Angle, pipe diameter size, gas liquid ratio and friction factor and so on.
分析参数有：倾斜角度、管径大小、气液比和摩阻系数等。
As a new technology, the reducing friction through method placing mortar has is more and more popular in the Pipe Jacking project.
注浆减摩作为一门新技术，在顶管工程中应用越来越普及。
To avoid slip of CFRP bars, the friction angle between soft metal pipe and CFRP bars should be larger than the sum of barrel's conical angle and friction angle between wedge and barrel.
为保证碳筋不出现滑移，软金属管和碳筋间的摩阻角应大于锚环锥角和夹片与锚环之间的摩阻角之和；
This paper introduced a special machine technology of applied in aluminium metallurgy profession for dense phase transfer pipe paint anti-corrosive and anti-friction.
本文介绍了一种铝冶炼行业氧化铝浓相输送管道防腐耐磨剂刷涂专机技术。
This paper deals with the relationship between friction resistance on the pipe wall and the pumpability of concrete mixtures, and also studies the equipment for friction resistance measuring.
本文介绍混凝土对管壁的摩阻力与可泵性之间的关系，摩阻力测定装置。
Injecting slurry is usually used to reduce the jacking friction in long-distance pipe jacking.
长距离顶管施工中为减小顶进阻力通常采用注浆减摩措施。
A mounting hole for arranging the high strength friction grip bolt is arranged at the top of the rectangle steel pipe column.
所述的矩形钢管柱的上部开有用于安装高强螺栓的安装孔。
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.
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；
Based on analysis of the process of pipe cold-drawing plug's wear-caused failure with the Dointview of friction science, measures for surface strengthening of the said plug were made.
用摩擦学的观点分析了冷拔顶头磨损失效过程，提出了冷拔顶头表面强化措施。
The reservoir buried deep, and the pipe friction is large, whereas the treating pressure is limited, which induce the displacement couldn't be increased to the required value.
而储层较深，管路摩阻大，可能会受施工压力的限制而无法提高排量导致压裂施工失败。
The reservoir buried deep, and the pipe friction is large, whereas the treating pressure is limited, which induce the displacement couldn't be increased to the required value.
而储层较深，管路摩阻大，可能会受施工压力的限制而无法提高排量导致压裂施工失败。
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