管线

A reciprocal FEM analogue method is brought forward, by means of taking into account the interaction of tunneling, the peripheral soil and underground utilities. And the calculating program, DLFEA-TPR, is developed to calculate the tunneling-induced deformation and stress of adjacent utilities.

考虑隧道开挖与周围土体以及地下管线的相互作用，提出了相应有限元模拟方法，开发了隧道施工引起邻近地下管线变形及应力的计算程序DLFEA—TPR。

The yield strength of the line pipe is the key factor for strength design of pipelines, but the deviation of the test result of yield strength by the most universal normative round bar specimen and flattened strip specimen cannot be ignored in high strength line pipes, which does give more bewilderedness to the inspection and evaluation of line pipe.

管线钢管的屈服强度是管线强度设计的基本参数，但是最常用的标准圆棒试样和板状试样测试钢管横向屈服强度的结果存在明显差异，并且差异随钢级的提高而增大，给实际的生产检验和评价带来困惑。

Colour code all the connection at the loading station.

在供给站管线接头处用颜色表明各管线

The faults of pipelines were separately treated in discrete random variable and continuous random variable using the probability analysis method and choosing the reasonably different probability models based on the fault statistics data of pressure pipelines extracted from random inspection, and the fracture failure probability of pressure pipelines was calculated using the fracture failure risk analysis system for pressure piping system containing defects.

以抽检得到的压力管线缺陷统计数据为依据，采用概率分析方法，通过合理选取不同概率模型，将缺陷分别按离散型及连续型随机变量进行处理，应用在役压力管道失效风险分析系统计算出管线的断裂失效概率。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

Shall be the provisions of Article 6.1.4 of this standard of measurement methods to measure hidden points and lines clearly marked pipeline point coordinates and elevation.

1应按本规范第6.1.4条规定的测量方法测量明显管线点和隐蔽管线点标志的坐标和高程。

The results showed that the fracture toughness of the weld of HFW pipe was lowest.The value of absorbed energy of HFW weld was closely related to the heat treatment process.But the fracture toughness of fusion zone of submerged-arc welded jointer,its microstructure was coarse granular bainite,and was lower than the other locations of heat affected zone;and with the increasing of steel strength,the effect of welding heat cycles on the pipeline steel became stronger,and form coarse microstructure in fusion zone leading to decrease fracture toughness.

结果表明，高钢级管线钢高频焊接焊缝处的断裂韧性最低，其冲击功大小与热处理工艺密切相关；而埋弧焊接热影响区断裂韧性在熔合线处最低，其主要原因是此处的组织为粗大的粒状贝氏体，而且强度越高焊接热循环对管线钢的作用越强，在熔合线附近更容易产生粗大组织，使断裂韧性降低。

All in all, TRZ series elastic sealing gas valve suitable for gas pipelines, particularly suitable for underground gas pipeline, from the study of the situation abroad, many countries have adopted flexible natural gas pipeline valve plate, the same nominal diameter flexible valve plate Compared with the ball, have fire protection features, the price is about 30% lower than the ball, use the same effect.

总而言之，TRZ系列弹性密封燃气闸阀适用于燃气管线，特别适用于地下燃气管线，从国外考察的情况来看，许多国家的天然气管线上都采用弹性平板闸阀，同公称通径弹性平板闸阀与球阀相比，都有防火功能，而价格比球阀低30%左右，使用效果相同。

The safety of pipeline Before installing the valve, all fittings and pipeline installation should be clean, purge, because pipes in the sand, scale, iron filings, etc.

安全的管线在安装调节阀前，全部安装管件和管线都要吹扫干净，因为管线中的砂粒、水垢、铁屑等会损坏调节阀内表面，尤其是要求严格的密封面。

Line capacities, correct line sizes, flow distribution in loops, required pump and compressor sizes, heat-transfer effects, Joule-Thomson effects, in-line flow patterns, vapor and liquid velocities, and preferential phase splitting at tees are all accurately determined.

管线能力、正确的管线尺寸、环路中的流体分布、要求的泵和压缩机规格、传热效率、Joule-Thomson 效率、管线内部流动方式、气体和液体速度、在三通阀处的预先相分离都可以准确地确定。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。