管线

The testing results suggests that the increase of H2S concentration will raise the brittleness coefficient, leading to the decrease of corrosion resistance for either X70 base metals or welding joints. Meanwhile, the results reveals that effect of H2S concentration on X70 base metals and welding joints is different: the influence of H2S concentration on welding joints'SSCC is bigger than on base metals'SSCC.

揭示了随着硫化氢浓度的增加，国产X70管线钢及其焊接接头的脆性系数增加，抗腐蚀能力减弱；硫化氢浓度对国产X70管线钢母材和焊缝的SSCC性能有着不同程度的影响：在相同的试验条件下，焊缝的脆性系数显著大于母材的脆性系数，即焊缝较母材的SSCC敏感性大。

The CCT curve and the rule of phase transformation at different cooling conditions were investigated profoundly, which thoroughly helped understanding the relationship of the structure and performance and provided a important reference for the industry applications.

并深入研究了X100管线钢的CCT曲线及其在不同冷却条件下的相变规律，为更好地认识X100管线钢组织-性能之间的关系和推动其工业应用提供重要参考。

Therefore,through the Geodatabase data model quoted by ArcGIS,the authors discussed the pipeline data organization and presented the system frameworks according to different requirements of application.The whole system design and function realization are accomplished by the combination of B/S and C/S architecture,which solved the problems such as management,application and dynamic ruled data-update of underground pipelines information.Meanwhile,the referenced scheme and basic idea for system construction of underground pipelines are provided in the paper.

为此，利用ArcGIS引入的Geodatabase数据模型，探讨数据的组织形式，根据不同的应用需求提出系统的框架结构，采用B/S和C/S架构相结合方式进行系统总体设计和功能实现，解决了地下管线信息管理、应用和法规保证的动态更新等问题，为城市地下管线的系统建设提供了借鉴方案和基本思路。

December 2, 2009 afternoon, Tuen valves trial of 40-inch diameter, Butterfly Valves pressure ball valve 600Lb welded pipeline testing organization in the state authority - Hefei Hefei General Machinery Research Institute under the Electrical Products Inspection Institute under test successfully passed through the pressure seal, Hydraulic seals and intensity of three tests, which marks the Tuen valves welded large diameter pipeline valve trial project a complete success.

2009年12月2日下午，屯阀公司试制的口径40寸、压力600Lb全焊接管线球阀在国家权威检测机构―合肥通用机械研究院下属的合肥机电产品检测院检测下，顺利通过气压密封、液压密封和强度三项试验，这标志着屯阀公司大口径全焊接管线球阀试制项目取得圆满成功。

As a result, the submarine pipeline cannot work normally according to the designed states when the free spanning is becoming longer increasingly, that is to say whether they can complete the preconcerted function in the spare time should be considered.

本文利用可靠度理论展开对海底管线在这一方面的研究，从可靠度的角度研究海底管线发生破坏的极限跨长，为维修决策提供进一步的依据。

By using the TM images in 1997,2001 and the spatial analysis methods of remote sensing and investigated by quadrat,the dynamic change of vegetation,land use and soil erosion in the "Shan-Gan-Ning air mass to Yinchuan" natural gas pipeline project region during the period from 1997 to 2001 are analyzed.

基于在中国西北生态脆弱区天然气管线建设的工程实例，利用夏季陆地卫星图像为基本信息源，应用遥感解译分析、野外样方调查等方法，以植被类型、土地利用、土壤侵蚀为基本评价因子，对天然气管线建设前、后项目区的生态环境变化进行了分析研究。

In addition, the removal of the trees and then move back to rehouse some difficulty, to move back to a tree pit to be dug appropriate, but the new roads the following pipelines are often more, dig deep and pit may cause damage pipelines.

另外，移走的大树再回迁安置有一定难度，回迁大树要挖相应的大坑，但新修道路下面往往管线较多，挖深坑和大坑可能会对管线造成破坏。

This study is primarily targeted at the control of excavation application in the county-township-utility agency, three-level government. Through empirical study relevant literature review and system development, this study first focuses on the entire official procedure period and then conducts analysis and research on five major aspects:regulation-construction-system-data-and update, A complete and improved system procedure is therefore proposed. With system control and auxiliaries, the long-time problem resulted from the sectionalism in each agency that leads to erroneous data and segregation is resolved.

本研究系以县政府—乡镇市公所—管线单位三级制政府申挖流程管制为主要目标，透过实证研究方法，从国内相关研究文献与系统发展进行课题分析，并首先以公务整体流程周期为主要观点，从法规-施工-系统-资料-更新五大重点进行整体深入分析与研究，提出完整的制度流程改善，并搭配系统管制与辅助，一次解决长久以来各单位本位主义造成管线资料错误与各行其事的问题。

The effect of varying soil properties on axial seismic response of buried pipelines is studied considering the interaction between the pipe and the soil.

考虑管线与土壤之间的相互作用，研究了土壤性质改变对埋地管线轴向地震响应的影响。

In this paper, the failure problem of the pipeline systems on the platform is researched by spot test, monitor, and numerical simulation. It is pointed out the major criterion of the failure mode and this kind of failure mode is inevitable. In order to improve the condition the pipeline ice-resistant rank should be enhanced.

本文通过现场检测、监测和数值模拟等手段对海洋平台上部管线系统的失效问题进行研究，给出该失效模式的主要判据，并且指出该种失效模式是无法避免的，应提高管线的抗振设防等级。

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。