新型弯管机改善了弯管质量，提高了工作效率。
The new type bending pipe unit improves the quality of pipe bending and increases work efficiency.
本文对一种弯管单元进行了改进。
每个弯管流量计的流量系数须经过实际标定。
The discharge coefficient for each elbow flowmeter should be calibrated in practice.
与无弯管相比，弯管造成叶轮进口的流场紊乱。
The bent pipe makes the flow field of impeller inlet strongly disordered.
不同管径的冷弯管需配置与之匹配的弯管模具。
The cold-bent pipes with different diameters must be equipped with the pipe-bending dies matching with them.
针对实验管段，分别建立入口直管和弯管的网格模型。
For the experimental pipe sections, grid models of the entrance straight section and the bend section are established respectively.
弹性弯管在谐振式直接质量流量传感器中起着重要的作用。
The elastic tube plays an important role in the resonant direct mass flow sensor.
弯管是火力发电厂主蒸汽管道系统中较易损坏的部件之一。
Elbow is one of parts in the system of main steam pipe which is easy to damage.
在实际应用中弯管质量和重复精度高，完全能够满足生产要求。
The practice of production shows high repeat precision and rapid pipe-bending speed, which fully satisfy the demand of production.
已在熔炼、铸造、弯管、热锻、焊接和表面热处理等行业广泛应用。
In melting, casting, bending, forging, welding and surface heat treatment and other industries widely used.
本文还通过计算机计算，得知流体对弯管两侧的冲刷力也是振荡的。
By using computer to calculate, we find the fluid flush on the curved pipe wall is also oscillatory.
根据弯管压损理论选择设计了短半径弯管，并对其进行了相关试验。
Based on the elbow press loss theory, a short radius elbow was chosen and designed and experiments were made using it.
采用完全空化模型，对液氧流经弯管中时的空化现象进行了数值模拟。
Numerical simulation was performed to investigate the cavitation phenomenon of liquid oxygen through an elbow pipe.
结果表明，电渣精铸可以明显改善耐热钢弯管的质量，并降低了成本。
The tests show that the new process can clearly improve the quality of the heat resistant bends and decrease the cost.
并讨论了不同R/D的粉体颗粒流动对弯管压力降及管壁磨损的影响。
The impact of powder particle flow of different R/D on the bend's pressure drop and pipe wall wear is also discussed.
关于烟管尺寸及允许的最大水平长度(包括起始弯管)，请参照下表。
Refer to the table provided for information on flues and maximum permitted straight horizontal length, including the starting elbow.
对橡胶弯管挤出成型规律进行了实验和理论研究并得出了应用数学模型。
An experimental and theoretical study was made on the regularity in extrusion of curved rubber hose and an applied mathematic model was established.
对破坏的过程进行分析后，提出了软土地基敷管弯管支墩基础的处理建议。
According to analysis on the destruction process, treatment advice was put forward on bend buttress pier foundation for laying pipe in soft soil subgrade.
重点介绍了钢板、板卷、钢管、弯管生产试验中几个重要的质量控制实例。
Several examples of the said quality control are described, involving the production of steel plate, strip, pipe and elbow, etc.
顶模是弯管全套模具的重要部件，它的设计直接影响弯管质量和弯管效率。
The top die is the important component of the complete set of pipe-bending die, the design of which directly impact the bending quality and the bending efficiency.
悬浮粒子的监测系统应当考虑采样管的长度和弯管的半径对测试结果的影响。
Where airborne particle monitoring systems are used, the length of tubing and the radii of any bends in the tubing must be considered in the context of the effect on test result.
这些水渠往往要凿通岩石，并需要地道、引水沟、弯管、渡漕和混凝土水道。
These canals are frequently excavated through rock, and require tunnels, flumes, syphons, aqueducts and open concrete-lined channels.
热煨弯管的防腐一直是埋地管道防腐的薄弱环节，直接影响管道的使用寿命。
Anticorrosion of heating bend pipes is a problem all along in buried pipeline construction. It affects directly the service life of the pipeline.
计算结果表明：在转臂上施加一定的反向弯矩，能有效减小弯管的壁厚减薄率。
It shows that pipe bending by using induction heating applied a counter torque can efficiently reduce the thinning ratio of pipe wall thickness.
主要叙述弯管流量计的进展、原理及流量公式、主要误差、应用情况以及前景等。
Progress, principle and flow-formula, main error, application situation and prospect of bend pipe flowmeter are described.
采用电阻应变测量技术研究了带有初始随圆度的弯管在纯内压作用下的应力分布。
The stress distribution of a curved pipe with an initial elliptic cross section under internal pressure was studied by using electric resistance strain method.
热力钢弯管是主蒸汽管道的薄弱部位之一，其寿命直接关系到整个管道系统寿命。
The heat - resisting steel elbow is one of the weak parts of the main vapour piping, the life of which is directly related to the life of entire piping system.
热力钢弯管是主蒸汽管道的薄弱部位之一，其寿命直接关系到整个管道系统寿命。
The heat - resisting steel elbow is one of the weak parts of the main vapour piping, the life of which is directly related to the life of entire piping system.
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