查询词典 dredge pipe

Apart from the working limitations resulting from its structural property, the flat plate heat pipe carries out heat dissipation through the evaporation and condensation of the working fluid. Thus, if the working angle of the fluid is adverse to its backflow, the heat pipe will fail easily. Furthermore, not the orientations of all the heat sources are favorable to the functioning of the heat pipe. To compensate for this drawback, this research focuses primarily on the development of a composite structure which will reduce the effect of gravity on the working fluid. Generally speaking, the heat pipe is divided into three main categories: the groove type, sintered metal type and mesh screen type, as shown in Table 2. As far as capillary force is concerned, the sintered metal type and mesh screen type show better performance. As mentioned in R.

平板式热管除了因其结构特性而产生的工作极限之外，由于其作用乃是透过工作流体的蒸发及凝结进行散热，故若是其工作角度不利于液体之回流，便容易使热管失效，且并非所有之发热源都是位于有利于热管工作之位置，因此本研究之主要目的为设计一可减少重力对工作流体影响之复合式结构；一般而言，热管之结构大致可分为沟槽、烧结及网格三种(如表2所示)，其中烧结及网格结构有较佳之毛细力，在 R。

Wavelet packet decomposition can decompose high-frequency part of signal. In order to obtain the energy rate index of each node this paper advances apply wavelet packet decomposition method to node response of pipe. And then use statistics method to analysis the energy rate index indicator of various nodes in pipe. Results show this method not only can detect the locations of damage in pipe, but also can get a preliminary study for quantify the damage degree damage of pipe.

本文提出将小波包分解方法应用于管道的节点响应，得出各个节点的能量率指标，并利用数理统计方法对管道上各个节点的能量率进行统计分析，结果表示该法不仅能确定管道的损伤位置，而且还能对管道损伤程度的定量分析作一个初步的研究。

Based on the experime ntal researches some of heat pipe apparatus are developed, such as, giant heat p ipe steam generator, high temperature heat pipe air furnace and separate-type heat pipe steam generator at high temperature and with high heat flux. All of t hese show the progress of heat pipe tec hnology research and development in recent years.

在试验研究的基础上，又相继开发了一系列热管设备，如高含尘气体下的大型热管蒸汽发生器、燃煤高温热管热风炉以及高温高热流密度下的分离式热管取热器，从而反映了近年来热管技术研究开发的一些进展情况。

Based on the ana1yse of the way of the water pipe network's management and the difficult problem which exist in the course of running water pipe network It presents the collectivity project of the city service pipe network Geography information manage system and estab1ish the waterpipe network's basic data-base,and conform afresh the network data by the mode of data-base organization. Then on the base of it,open out the water pipe networks graphics show and edit,hydraulic simulation module,disposal accident module and data query andanalyse module and set up the geography information system.it will exert the network's data-base and computer effect on the city water management.

在对目前给水管网管理方式以及管理过程中碰到的问题进行分析的基础上，给出了城市给水管网地理信息管理系统的总体方案和详细设计，同时建立了给水管网基础数据库，依照数据库的组织方式对管网数据进行管理、编辑和分析，并在此基础上，开发了城市给水管网图形显示、图形编辑、水力模拟、管网事故处理、管网数据查询分析和管网数据专题图等功能模块，建立了城市给水管网地理信息系统，以充分发挥管网数据和计算机技术在城市供水管理中的作用。

Therefore a GD sand-screening pipe is developed, which is helpful to the environment protection. This new sand-screening pipe consists of center pipe, sand filter and guide shoe. The center pipe is machined from 64mm tubing, and the sand filter is made from silica sand, cement, additive.

这种环保型滤砂管由中心管、滤砂器及引鞋组成，中心管采用 6 4mm油管加工而成，两端为特种 6 4mm平式油管螺纹，管体上每米均匀分布 72个直径 10mm孔眼；滤砂器是根据不同技术标准筛选不同粒度的石英砂、油井水泥、添加剂和水按配比加工压制的。

The fuse pipe is the main part of fuse,it is made by installing the fuse wire in the porcelain pipe,filling the quartz sand in the porcelain pipe and sealing to-ends of pipe.

熔断管是熔断器的主要部件，它是由熔丝装在瓷管中，并在瓷管中充填石英砂，两端密封而成。

Generally, this new technique has three steps. First, mill the necked-in casing with the efficient milling cutter head; and then salvage and back-off the buried pipe by a suitable fishing tool based on fish tip status; at last, orderly use a efficient taper pups and taper to extend and dredge the casing refitment section.

该技术首先利用高效高效铣削式套铣头对缩径套管进行套铣，然后根据鱼顶情况选择合适的打捞工具打捞、倒扣出被埋管柱，最后将高效铣锥短节和铣锥对修套井段进行扩铣通径。

The main services the company: to provide part-time, indoor and outdoor decoration, second-hand housing renovation, pipe dredge, air-conditioning repair and maintenance, cleaning services.

公司主 要服务项目：提供钟点工、室内外装修、二手房翻新、管道疏通、空调维修和保养、保洁服务。

Pipe dredge, water and installation.

五、管道疏通，上下水安装。

Troubleshooting: plug removal and replacement of fill, dredge water pipe trench, the correct installation of seal ring; fastener or replacement of the impeller; reduce pump installation, or when the water level rose after the boot.

排除方法：清除堵塞物，更换填料、疏通引水管沟槽，正确安装水封环；紧固或更换叶轮；降低水泵安装位置，或待水位上升后再开机。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。