管

A connector for a plain end pipe comprising a housing (7) for location over the pipe, an annular recess (4) formed in an inner surface of the housing (7), a seal (1) located in the recess (4), a nipple (8) for the supply of grease under pressure, and segmental grippers of L-shaped cross section comprising a leg (6) and a foot (5) having a serrated inner surface for engagement with the pipe.

一种用于平端头管的管接头，包括一个放在管子上的外壳（7），一个在外壳（7）的内表面上制出的环绕管子的环形槽（4），一个位于槽（4）内的密封件（1），一个在压力下供应油脂的入口（8），和L形断面的分段式管夹，它包括一个腿（6）和一个具有与管子接合的锯齿形内表面的脚（5）。

This article is about a systematic research on the problem to use laser for hardening treatment of gun tube bore surface, including significant process, and it provides test data for laser treatment of gun tube meterial.

研究了激光用于火炮身管的内表面硬化处理问题，对实施工艺作了有意义的探讨，而且提供了对身管材料激光处理的实验数据，为激光热处理技术用于火炮提高身管的使用寿命进行了有益的工作

The direct evaporative internal-melt ice storage air conditioning is a new and promising technology.It is important to master the ice coil heat transfer performance for the project.The paper analysed the dynamic characteristics and established the corresponding mathematical models of the system,and used the model to analyse the performance of caving cooling process changes.The model for direct evaporation in the U-shaped ice-melting ice storage VRV system couldbe helpful to design and optimization theory.

直接蒸发内融式冰盘管是空调蓄冷工程中常用的一种方式，对这种冰盘管的融冰传热性能的掌握对于工程应用非常重要，本文对基于VRV空调系统的内融式U形冰盘管融冰过程的动态特性进行了分析，建立了相应的数理模型，并利用该模型分析了放冷过程的性能变化，该模型可为直接蒸发内融式U形冰蓄冷VRV融冰系统的设计及优化提供理论依据。

Physically Blending with Plastic for Improving the Security of Using Plastic Nonel Tube inHigh Temperature Environment;2. The contact of the nonel tube ignition and the detonator delay time is much closed.

导爆管的发火与雷管秒量有着密切的联系，从生产实际出发，对导爆管发火与消爆机理做了详细的探讨，重点分析和研究了导爆管点燃延期药的原理和过程、消爆空间对雷管秒量的影响，以及影响雷管秒量的因素，对提高雷管的点火可靠性及秒量精度具有一定的参考价值。

The experimental investigation demonstratesthat (1) the critical perforation energy of pressure pipelines (D/H=15) with pressure OMPa under lateral impact of flat-nose and spherical-nose indenters ranges from 2~3%,the critical perforation energy of empty pipelines is higher 1 ~2% than pipelines filled in water without pressure.

实验研究结果表明：(1)当管梁内注满水，预加工作内压P=0MPa时，对于径厚比D／H=15的厚壁圆管，在平头弹体和球形弹体两种弹体冲击作用下临界穿透破坏能量的降幅在2～3％之间：锥头弹体冲击厚壁空管的临界穿透能量比充水预加内压为P=0MPa的圆管高1～2％：(2)充水管道的预加内压提高，临界穿透能量有一定降低。

Is a research, development, production and sales of integrated enterprise, mainly produces high-speed road crash barrier, the ball ink on water pipes, ductile iron pipe, centrifugal ductile iron pipe, ductile iron manhole covers, cast iron spilled water pipes, cast iron pipes, cast iron-cast copper-wing-style cast aluminum alloy radiator, cast iron railings fence, green railing, artistic doors, anti-theft, sewage wells, hoods,箅子, flexible pipe fittings and other products, can also be synchronized in accordance with the requirements of the customers design, drawings and samples custom processing.

连云港光明铸业有限公司，是集研制、开发、生产、销售于一体的综合性企业，主要生产高速路防撞护栏、球墨上水管、球墨铸铁管、离心球墨铸铁管、球墨铸铁井盖、铸铁泻水管、铸铁排水管、灰铸铁铸式铸翼式铜铝合金散热器、铸铁围墙栏杆、绿化栏杆、艺术大门、防盗、污水井、盖、箅子、柔性管件等系列产品，还可根据用户需要进行花样设计、来图来样加工定做。

In this thesis, the localization length, quantum size effect, quantum interference phenomenon in nanotubes have been theoretically studied.

本论文从理论上研究了碳管中的局域化长度、量子尺寸效应、量子干涉现象，并讨论了磁场对碳管电子结构的影响，超导/碳管/超导结中的邻近效应。

The procedure is similar to the one used for inserting intra-uterine devices.

这项处置方法与放置宫内避孕器的方法相似，医生通过子宫颈把一根小管插入子宫，然而并不是通过小管放置宫内避孕器，而是在管的一端接通真空泵，借此吸出（也就是&吸取&或&萃取&）子宫内膜（正常时以月经的形式脱落）。

Scanning electron microscopy,X-ray fluorescence spectroscopy,X-ray diffraction and X-ray photoelectron spectroscopy were used to analyze the microstructure,chemical composition,crystalline structure and compound constitute of the corrosion scale from cast iron pipe and galvanized steel pipe in drinking water distribution systems.

使用扫描电镜、X荧光光谱分析、X射线衍射分析以及X光电子能谱对给水管网中铸铁管和镀锌钢管上的管内壁腐蚀管垢进行微观形态、化学组成、晶体结构和化合物构成等物理化学特征分析。

A new process for seamless tube production called Seamless Tube Process comes into our horizon. The key equipment is a four—roll planetary rolling mill, which is also called Kocks Reduction Mill. The structure and operation principle of four-roll planetary rolling mill is similar to the three-roll planetary rolling mill.

最近出现了一种新的轧管工艺——STP轧管工艺，其核心设备为四辊行星轧机，又称KRM轧管机，其结构和工作原理与三辊行星轧机类似。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。