查询词典 pipe-rack

Prestressed concrete cylinder pipe combines the tensile resistance of high tensile strength steel wire,the press resistance of concrete and the seeping resistance property of steel pipe organically.

卢家鑫，PCCP用预应力钢丝性能分析预应力钢筒混凝土管将高强度钢丝的抗拉、混凝土的抗压和钢管的防渗性能有机地结合。

Mayor Bloomberg said the explosion at the 83-year-old steam pipe may have been caused by cold rain water seeping into the pipe.

布隆伯格市长说， 83 年前舖设的蒸汽管道发生的爆炸可能是由於冷雨水渗入管道。

Mayor Bloomberg said the explosion at the 83-year-old steam pipe may have been caused by cold rain water seeping into the pipe.

布隆伯格市长说， 83 年前舖设的蒸汽管道发生的爆炸可能是由于冷雨水渗入管道。

Mayor Bloomberg said the explosion at the 83-year-old steam pipe may have been caused by cold rain water seeping into the pipe.

布隆伯格市长说，83年前铺设的蒸汽管道发生的爆炸可能是由于冷雨水渗入管道。

In the joint of LG PEX-A Pipe ,male xocket is pressed to a convex on the inserting part and the fastening ring will contract to fasten up the heating pipe by the fastening of outer nut,and there is also a convex on the ring to offer close coupling by mechanical re-press effect to prevent water from leaking in case of heat expansion.

在LG地热管中的连接部位不仅阀门管套插入部分的凸起部位被机械作用压密，而且随着外部螺母被拧紧，使紧固环收缩，从而带紧热炕暖气管，另外由于存在凸起部位，可通过机械作用进行再次压密，因此可防止由于热膨胀而引起漏水。

PE-X pipe and aluminum plastic compound pipe in water-supply engineering are introduced.

介绍了PP R管、PE X管和铝塑复合管在给水工程中应用的优劣。

First, by the allocation of irrigation water directly into the ditch outlet Xiaqi, achieve no water loss, greatly improve the utilization of water; are two irrigation systems, replace the pipe with water furrow, not square, and the right to re-use, reducing the irrigation investment; Three is the use of the gate with the outlet opening to adjust a constant and accurate control of flow into the trench plot, for different soil and different groove specifications Xiaqi can greatly improve irrigation uniformity; four gates are porous pipe irrigation system for the flow tubes, and the blind to cross the flow tube as compared to the wall can reduce the work under stress, and reduce the damage to the opportunity to prolong the service life of thin-walled tube; are five gates to facilitate the installation of irrigation systems, pipes, and, upon request, to fight孔安outlet assembly to ensure the accuracy of positioning with the outlet.

一是灌溉水经配水口直接进入沟畦，实现无输水损失，极大地提高了水的利用率；二是管灌溉系统代替配水垄沟，不占地，且右重复使用，降低了灌溉投资；三是利用配水口的闸板开度来调节准确恒定地控制进入沟畦的流量，适用于不同土质和规格不同的沟畦，可大大提高灌水均匀度；四是闸管灌溉系统为多孔出流管，与等过流量的盲管相比，可降低管壁承受的工作压力，并减少受损机会，从而延长薄壁管的使用寿命；五是闸管灌溉系统安装方便，并可根据要求打孔安装配水口，确保配水口定位的准确性。

Four methods of irrigation, trickle irrigation, portable sprinkling irrigation, porous pipe sprinkling irrigation and furrow irrigation were tes ted. It was found that all with trickle irrigation, portable sprinkling irrigation and porous pipe sprinkling irrigation have remarkabler effect on water saving than furrow irrigation.

本试验通过滴灌、微喷灌、多孔管喷灌和沟灌等四种灌水方式，得出滴灌、微喷灌和多孔管喷灌均较沟灌有明显的节水效果，节水率可达50％以上；除沟灌外，其它灌水方式棚内空气相对湿度均较低，这对缩短夜间结露时间和减轻或防止黄瓜的病害有一定的积极作用。

The automatic servo mechanism has coaxial walking wheel and driving wheel, chain driving among the driving wheel, unwinding wheel and pipe reel, and slip clutch mounted between the pipe reel and the winding wheel.

本装置的行走轮与驱动轮同轴，驱动轮与放线轮和管线卷盘之间由链条传动，滑差离合器装在管线卷盘与收线轮之间。

Sponsored by the Scientific Research Foundation of Harbin Institute of Technology, this dissertation aims to establish microrobot walking in pipe with the diameter of 16mm to 18mm based on abundant of investigation and research work. Different research approaches are implemented, ranging from basis study to unit technology to system. An in-depth research on in-pipe micro locomotive and controller was conducted on the basis of piezoelectric bimorph actuator and the principle of Impact Drive Motion .

本文在&哈尔滨工业大学科学研究基金&支持下，以建立在直径φ16mm～φ18mm的管内行走的微小型机器人及其控制系统为目标，进行了大量的调研和研究工作，采用从基础技术，单元技术到系统集成的研究方法，对基于双压电膜驱动和采用惯性冲击式运动机理的管内移动机器人及其控制系统进行深入的研究。

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。