查询词典 in the pipeline

This paper combines with pipeline delivery of our countrys actual conditions and other methods of detection and location. To the leakage characteristic of the fault to the long-distance natural gas pipeline, a method is raised, which is on the basis of wavelet and negative-pressure-wave to detect the leakage and locate. Jobs in this paper are as follows:Multi-resolution decomposition and reconstruction of wavelet transform is utilized to filter the noises, which the leakage brings the noises of negative-pressure-wave. The research is worked in the wavelet and wavelet packet filter. The wavelet transform have a fast and accurate recognition capability to signal singularity. This paper chooses wavelet technology to catch the break point of pressure signal.

本文结合我国管道输送的实际情况和目前现有的各种泄漏检测与定位方法，针对天然气长输管线泄漏故障的特点，提出了基于小波分析和负压波相结合的方法检测泄漏并定位，其中主要进行了以下几个方面的工作：利用小波变换的多分辨率分解和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行降噪处理，并对小波及小波包优化的降噪效果进行对比性研究；利用小波变换技术对信号奇异点的快速、准确的识别能力，捕捉负压波信号的突变点，从而判断是否有泄漏发生。

Moreover,a numerical model of embeded pipeline/soil interaction under complex wave laod is developed, the behavior of pipeline in the liquefied soil is simulated base on finite distortion theory, finaly the influence factors are analysed and a set of conclusions are put forward.

建立了复杂波浪荷载作用下埋置管线与周围土体相互作用的数学模型，并基于大变形理论，对管线在液化土体中的移动进行了模拟，并对影响土体液化和管线在液化土体中行为的因素进行了分析。

Large numbers of bends and elbow s are required in construction of long distance pipeline with large diameter to suit the pipeline to the hypsography.

在大口径长输管道工程施工中，由于沿途地形起伏变化，需要使用大量的弯管和弯头，为了在施工现场能准确测量弯管和弯头的角度，正确选取弯管和弯头，研制出了弯管角度测量器。

Based on some correlative the theory analysis and conclusion of experiment about impedance muffler, some issues about the foundation of model of leak pipeline are tried instructively and analysis reasonably by the acoustical analysis and the characteristic of acoustical spread in the leak pipeline is studied. The leak detection is a little more wonderful technology which can find the leak and then locate it accurately in virtue of correlation leak detection.

本文综合了有关文献的理论分析和试验结果，从声学的角度对供水管道漏损的声学模型的建立进行了有益的尝试和合理的分析，并对漏损管道内的流体声传播特性进行了研究。

The petrochemical industry mainly uses API standard gate valve, globe valve and check valves; electricity sector, mainly in power stations using high-temperature pressure valve, globe valve, check valve and safety valve, and part Reducing Valves of the low-pressure water supply and drainage valve butterfly valve, gate valve; the chemical industry mainly uses stainless steel valve, globe valve, check valve; metallurgical industry mainly uses low-voltage large-diameter butterfly valve, oxygen valve and oxygen valves; urban construction department used mainly low-pressure valve, such as urban water mainly in the large-diameter pipeline valve, the main floor, blending the building used by the center line butterfly valve, urban heating mainly in the metal sealing butterfly valve and so on; oil pipeline used mainly flat gate valve and ball valve; the pharmaceutical industry mainly uses stainless steel ball valve; the food industry mainly uses stainless steel ball valve and so on.

石化行业主要采用API标准的闸阀、截止阀和止回阀；电力部门主要采用电站用高温压闸阀、截止阀、止回阀和安全阀及一部分给排水阀的低压蝶阀、闸阀；化工行业主要采用不锈钢闸阀、截止阀、止回阀；冶金行业主要采用低压大口径蝶阀、氧气截止阀和氧气球阀；城市建设部门主要采用低压阀，如城市自来水管道主要采用的大口径闸阀，楼寓建设主要采用的中线蝶阀，城市供热主要采用的金属密封蝶阀等；输油管线主要采用平板闸阀和球阀；制药行业主要采用不锈钢球阀；食品行业主要采用不锈钢球阀等。

In the design of fire water supply system in flight area of new Baiyun International Airport,explanation was given to the selection of pipe materials,anticorrosion of pipeline,and setting up of fire hydrant chamber,valve chamber,and water hydrant chamber,as well as the special treatment and notes for pipeline running through runway.

飞行区内的消防给水系统设计与一般的设计存在着很大差别，结合广州新白云国际机场飞行区的消防给水系统的设计，对消防给水管道材质的选择，管道防腐，消火栓井、阀门井、给水栓井的设置，以及管道穿越跑道时的特殊处理和注意事项进行了阐述。

Busparallel expansion and pipeline technique are adopted to improve the average inputand output speed of recorder based on FLASH memory. 2 A concept of 'cluster' isintroduced. The using state message of each cluster is loaded in the spare area,following the target datum, to keep the pipeline sequence of multiple clusters' loading, which guarantee the average input speed of system. 3 Based on the using statemessage of every cluster, the Cluster Allocation Table established in memory enablethe system to manage the recorder flexibly in high speed, similar to a file managementsystem. 4 PowerPC 8245 based embedded system, along with Vxworks real-timeoperating system is introduced to make the system more easier to be applied to theprojects in the future.

本文所述的关键技术特点主要包括：采用了并行扩展以及流水线操作技术以提高基于FLASH芯片的存储区平均输入输出能力；引入了&簇&的概念，为了保证连续写入过程中的流水线顺序，系统向存储区加载每一簇有效数据后，紧接着还将向相应簇的空余区中加载该簇的使用状态信息；根据所有簇的使用状态信息在系统内存中建立&簇分配表&，可以支持系统快速灵活地管理存储区，即，类文件化的数据管理；采用基于PowerPC8245的嵌入式计算机硬件系统及基于Vxworks的嵌入式实时操作系统，提高了系统的整体性能及系统研发的延续性。

It is established a pigging model for the associated gas pipeline, in which instructions have been describe in details about how to compute the pressure in the pigging initial station, the pressure drop along the pipe, and the pressure fall resulted from the friction between the pipeline cleaner and the pipe.

文章建立的油田伴生气管线清管模型详细说明了如何计算清管始发站输气压力、沿程压降和清管器与管壁摩擦引起的压降。

The size and complexity of these pipeline bridges vary widely, one of the most complex examples is the pipeline suspension bridge built across the Tanana River in Alaska to carry the 48-in.

这些管桥的大小和复杂性相差很大，最复杂管桥的一个例子是横贯阿拉斯加48英寸原油管道通过Tanana河的管道悬索桥。

Zurich, Switzerland, October 16, 2007 - The giant Ormen Lange gas field in the Norwegian Sea will supply 20 percent of the United Kingdom's gas needs via a 1,200 kilometer pipeline – the longest underwater pipeline in the world.

瑞士苏黎世10月16日消息——位于挪威海的大型Ormen Lange天然气田将通过世界上最长——1200公里的水下管道，供应英国20 ％的天然气需求。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了