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diameter of pipe
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  管径
     When the diameter of pipe roof was 159 mm,the increase on diameter had no effect for the displacement.
     直径>159mm,管径的提高对于位移几乎没有影响;
短句来源
     The effects of curvature radius and cutting speed on the top kerf width of circumferential laser cutting of thin seamless steel pipes with a small diameter (outer diameter of pipe D <80mm and wall thickness t =2.5mm) were investigated experimentally .
     研究了曲率半径(管径)和切割速度对薄壁小管径(外径D<80mm,壁厚t=2.5mm)无缝钢管激光圆周切缝宽度的影响,发现:(1)随着激光切割圆周角度(弧长)的增加,切缝宽度增加;
短句来源
     Several key design variables may be changed, such as diameter of pipe and velocity of flow of gas. These cases have been considered, and their results have also been compared with each other.
     比较了几个重要的设计变量,如外管径、烟气流速等参数变化时,总传热系数和空预器本体管子总重量,阻力损失以及最低管壁温度等几个重要设计结果的变化趋势,对内螺纹管空气预热器的设计具有借鉴意义;
短句来源
     By comparing the calculation of waterpower in fixing pipe with time-delay and self-closing valve and installing pipe with float-valve in flush tank,the water pressure of the indoor and outdoor main pipe is obtained, which is needed by the diameter of pipe with self-closing valve and of water meter at the range of set flowing speed,so the normal efficiency of self-closing valve is guaranteed.
     通过对安装延时自闭阀管道和装设冲洗水箱浮球阀管道水力计算的比较 ,得出在设定的流速范围内自闭阀管道的管径和水表的口径为满足使用要求而需要的室内外干管水压 ,以保证自闭阀发挥正常功效
短句来源
     The results show that the values of the kerf width on the upper surface, the half squareness, and the HAZ increase with the increase of spatial curvature radius except for the values of the cut surface roughness R z as the diameter of pipe remains unchanged and the pitch increases.
     当管径不变、螺距增大时 ,随着空间曲率半径的增加 ,切缝宽度、热影响区宽度及切口横截面半垂直度增大 ,切口表面粗糙度减小。
短句来源
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  管材直径
     This paper deals with the successful research of industrialized single-screw extrusion line of ultra high molecular weight polyethylene pipe. The parameters include that the screw diameter is 65mm, the diameter of pipe is 110mm, the output is 20-40 kg/h, the molecular weight of UHMWPE resin is 2. 5~3 million,and UHMWPE pipe obtains the same continuous and stable extrusion process as that of common plastics pipe.
     本文论述了超高分子量聚乙烯管材单螺杆挤出工业化生产线的成功研制,其参数为:螺杆直径65mm,管材直径110mm,产量达到20~40kg/h(树脂分子量250~300万),生产过程和普通塑料管材的挤出一样连续稳定。
短句来源
  “diameter of pipe”译为未确定词的双语例句
     It is found that the best work conditions for the instrument is as following: The chromogenic agent's concentration is 0.01%, the inside diameter of pipe is 0.5mm, the length of pipe is 100cm, the sampling volume is 150ul, the pipe is knotted.
     从实验结果得到,仪器工作的参考条件是:亚硝基R盐溶液0.01%,管道内径为0.5mm,反应管长为100cm,注样体积为150ul,编织反应器。
短句来源
     The Wei He Fertilizer Works uses water cycle cooling technology of Marley Company USA. The cycle water is about 900, 000 tons per day. Diameter of pipe is 1600- 1800 mm and underground depth is around 5m.
     渭河化肥厂采用美国(MarlegCoolingTower)玛丽公司循环水冷却技术,装置日循环水量约90万t,埋地钢质输水主管直径1600~1800mm,埋深约5m。
短句来源
     The basic steps for analysizing the system were checking the technical parameters of every equipment,the structure of pipe network and the diameter of pipe,determining the emergency discharge conditions for single equipment,the simultaneously discharge conditions for multiequipments and the maxium safety discharge of equipment,calculating the transfer capacity of discharge pipe network.
     提出了系统分析的基本步骤 ,即 :核实各设备 (元件 )技术参数 ,核实管网结构与管道 (管件 )直径 ,确定单个设备的紧急泄放条件 ,确定多个设备的同时泄放条件 ,确定设备最大安全泄放量 ,对排放管网输送能力进行核算
短句来源
     Some experiments were carried out by the method of flow injection analysis and the influence of chromogenic agent's concentration, the inside diameter of pipe, the length of pipe, the flow rate of carrier, the analysis rate, the sampling volume and the shape of pipe on the absorption were discussed.
     用流动注射分析法讨论了显色剂浓度、管道内径、管长、流速和分析频率、注样体积以及管道几何形状对吸光度测定的影响。
短句来源
     Characteristics of local pressure drop caused by oil water emulsion flowing through horizontal inlet and vertical upward outlet 90° bent are studied. The inner diameter of pipe is 45? mm, the curvature radius of bent is 300?
     以油-水为工质 ,对进口水平、出口垂直向上的 90°弯管内油 水乳状液局部阻力特性进行了实验研究 ,弯管内径 4 5mm ,弯曲半径 3 0 0mm .
短句来源
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  diameter of pipe
Of theconfigurations tested, the stilling basin model M-24 with tworows of wedge-shaped baffle blocks in a basin length of sixtimes the diameter of pipe outlet (6d) performed better incomparison to USBR impact type VI stilling basin.
      
The most thermal stress is in inverse proportion to diameter of pipe and velocity of inlet air.
      
The computed results show that the large thermal stress exits in the SiC, and the stand pipe should be ellipse for the least thermal stress; the optimal ratio of thickness to diameter of pipe is 6, the velocity of inlet air is 25 m/s.
      
The structural and operational parameters of heat exchanger, the junction between standpipe and snake pipe, the diameter of snake pipe, ratio of thickness to diameter of pipe, velocity of inlet air were optimized for thermal stress.
      
Place to minimum 6 inch thickness around outside diameter of pipe.
      
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In this paper, based on many experiments, an empirical correlation between the drag reduction onset wall shear stress Tw~* and the mote hydraulic volume of linear macromolecular polymer M[η] is presented. The accuracy of this formula is εatisfying, and the onset wall shear stress Tw~* derived from it is in accord with the experimental data obtained by other experimenters abroad.The concentration of polymer solutions, the diameter of pipes effect on onset wall shear stress Tw~* and the tendency of the flow...

In this paper, based on many experiments, an empirical correlation between the drag reduction onset wall shear stress Tw~* and the mote hydraulic volume of linear macromolecular polymer M[η] is presented. The accuracy of this formula is εatisfying, and the onset wall shear stress Tw~* derived from it is in accord with the experimental data obtained by other experimenters abroad.The concentration of polymer solutions, the diameter of pipes effect on onset wall shear stress Tw~* and the tendency of the flow curves after onset are analyzed.All the experiments were performed in two apparatuses consisting of smoothpipes. (Their inner diameters are d=0.587cm and D=2.3cm respectively.) Some polymers usually employed for drag reduction made in China——polyacrylamide, homopolymer and partially hydrolyzed (their molecular weight ranges from 3×10~6 to 10×10~6) were used.The factors which affect the condition at onset of drag reduction were observed and analyzed carefully.

本文在大量实验的基础上,提出了预测减阻起始壁面切应力T~W*与高分子线型聚合物克分子水力学体积M[η]之间的一个经验关系式。该公式具有较为满意的精确度,由此预测的壁面切应力T_W*与国外研究者的实验数据相比甚为吻合。文中还分析了聚合物溶液浓度、管径对减阻起始时的壁面切应力T_W*、其他减阻起始参数以及减阻起始后流动曲线的趋向的影响情况。所有试验是在内径为d=0.587厘米和内径为D:2.3厘米的光滑圆管中进行的。采用国产几种常用的减阻剂——聚丙烯酰胺及聚丙烯酰酸(分子量从300万~1000万),详细地观察和分析了影响减阻起始条件的因素。

In this paper the author on basis of theory of water hammer de- rives a famula of calculating the water hammer pressure in different diameters of pipes which might serve as a useful reference in enginee- ring designs.

本文根据水击基本理论,推导出异径管道水击压力计算公式,可供工程设计参考.

The turbulent flow of plastic fluids in smooth pipes has been studied by using the stochastic theory of turbulent flow, and the formulas have been presented for evaluating the time average velocity in the whole section of pipes, mean velocity and friction factor. The results obtained from the study have shown that the influence of the yeild stress of plastic fluids on turbulent flow is determined by τ_o/τ_w. The influence will be soon reduced as Re(z) increses or the diameter of pipe reduces. The influence...

The turbulent flow of plastic fluids in smooth pipes has been studied by using the stochastic theory of turbulent flow, and the formulas have been presented for evaluating the time average velocity in the whole section of pipes, mean velocity and friction factor. The results obtained from the study have shown that the influence of the yeild stress of plastic fluids on turbulent flow is determined by τ_o/τ_w. The influence will be soon reduced as Re(z) increses or the diameter of pipe reduces. The influence of the yeild stress on the dimensionless velocity profile is very small

本文应用随机湍流模型对塑性流体在光滑圆管内的湍流流动规律进行了研究,得到了包括近壁区域在内的断面时均速度分布和平均速度、沿程阻力系数的计算公式。结果表明,塑性流体的屈服应力对湍流流动的影响是由比值τ_0/τ_w(τ_0为屈服应力,τ_w为管壁处切应力)的大小来决定的,随着雷诺数R_e((?))的增大或管径减小,这种影响将很快衰减,而屈服应力对无因次速度剖面的分布影响很小。

 
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