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In this paper, formulas for calculating the thickness of the turbulent boundary layer and the inlet length in the entrance region of the rough pipe are given with the help of momentum integral equation in which the velocity distribution is the logarithmic law.

本文在流速分布对数律假设下，通过求解动量积分方程获得了粗糙圆管进口段紊流边界层和进口段长度的计算式。

Signal International, a marine-fabrication firm, brought around 500 welders and pipe fitters from India—most of them from the southern state of Kerala, many of whom had laboured in various Arab Gulf states—to work in its shipyards in Pascagoula and Orange, Texas.

"信号国际"是一家海洋制造业公司，从印度招聘了500名焊接工和管道工，分别派往帕斯卡古拉和德州奥兰治的造船厂中工作。这些印度工人大部分都来自印度南部喀拉拉邦，并且都曾经在阿拉伯海湾国家务工。

In the re-pressed tests with jacked pipe piles in soft clay, it was observed that the re-pressed starting pressure can reach to more than 2.5 times the final pressure for 25 days after finishing the installation; and it increased more rapidly in early period than later.

对饱和软黏土地基中的静压管桩进行隔时复压试验发现，复压起动压桩力在沉桩25d后的增长幅度达2.5倍以上，且前期增长较快而后期较慢。

The check valve avoids refluence of air in pipe- lines and consequent pressure loss in which compressed air is intended to flow in one direction only.

单向阀能防止管路中的空气回流，以及随之而来的因压缩空气朝这一方向流动而产生的压力损失。

The subway project crossing under the Hongxu road employed pipe-roof to push a box culvert of the largest in the world at present cross section into the saturated soft soil stratum under the Beihong road located in the middle ring-road in Shanghai.

上海市中环线虹许路北虹路下立交工程是目前世界上在饱和含水软土地层中施工的截面最大的管幕法工程。

When Sinlaku hit Taiwan during September 12-15, 2008, the extremely torrential rain made Hou-Fong Bridge, located in downstream of Shi-Gang Dam, broken at around 6:50 p.m. on September 14, 2008. In this study, the case was applied to investigate the factors which resulted in the typhoon flood scour disaster and the disaster prevention mechanism, including the general scour of upstream and downstream river banks, the riverhead erosion and constriction scour, the free fall of broad-crested weir effect caused by water-pipe protection engineering, the disaster prevention and response of the bridge care and management unit, and the examination, timing and procedure of bridge block.

中文摘要本研究系以97年9月12日至15日强烈台风辛乐克侵袭台湾期间，所降下的超大豪雨造成位在大甲溪石冈坝下游后丰大桥於9月14日下午6点50分左右发生断桥事件为例，探讨台洪冲刷灾害成因与防灾应变机制，包含上下游河道之一般冲刷、河道向源侵蚀与束缩冲刷及位於桥梁上游约20公尺处之自来水干管保护工所产生宽顶堰跌水效应等影响，并检讨桥梁养护管理单位於断桥发生前防灾应变处置方式及台洪期间之巡查检测、封桥时机与封桥作业流程等等相关因应作为。

In this thesis we introduce this theory into the traffic simulation of cloverleaf and provide a new method in research of the urban traffic simulation. In this system, we use the modeling method of multi-Agent to build the Road Agent, Vehicle Agent, Detector Agent, etc and also provide the intellective decision-making unit and communicate pipe for each Agent.

本文将多智能体技术引入到了立交交通仿真中，采用多智能体的系统建模思路，将车辆、道路、检测器等以智能体的形式建模，并为每个交通元素建立独立的智能决策单元及相互通信的通道，使整个交通仿真系统在各交通智能体的不断交互过程中完成整个仿真系统的运行。

Items to be declared mainly concentrated in the area of people's livelihood, there are: Xixi Wetland 3 30,000,000 yuan, Chun'an Qiandaohu Town, Tonglu Fuchunjiang town Yaolin town sewage treatment works 13,000,000 Yuan, Lin Hong Gao Zhen, Wang farm town sewage pipe network project 1.90 million in drinking water projects in Lin'an City, 5.55 million yuan, Lin'an City, Changhua hickory woodland soil erosion control works 2,320,000 yuan, rural marsh gas project Chun'an County 1710000 element.

杭州申报的项目主要集中在民生领域，主要有：西溪湿地三期3000万元，淳安千岛湖镇、桐庐富春江镇、瑶琳镇污水处理工程1300万元，临安高虹镇、横畈镇污水管网工程190万元，临安市饮用水工程555万元，临安市昌化山核桃林地水土流失治理工程232万元，淳安县农村沼气项目171万元等。

In order to find out an accurate and practical soil water movement simulation method for infiltration irrigation management, in this paper, investigations of field subirrigation using a rubber-based porous pipe were carried out, and Green-Ampt Model and Philip Method for solving one-dimensional Richard Equation were used respectively to simulate the soil water movement in perpendicular and horizontal directions.

为了寻找一种准确实用的土壤水分运动模拟方法用于指导田间渗灌，该文对一种橡塑渗灌管田间渗灌过程进行监测，并采用Green-Ampt积水入渗模型和一维水平吸渗模型Philip解法分别对渗灌过程中土壤水分在垂直和水平方向的运动进行模拟，通过与田间实测值对比，检验模型的适用性。

Launching from a drainage pipe, young men in the village of Ghaira in southwestern Tajikistan cool off in the only swimming hole around: an irrigation canal.

15塔吉克斯坦西南部Ghaira村的小伙子从一根排水管上下水，在一个仅仅一孔之围的处所游泳纳凉：那是一处灌溉渠道。

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。