真空的

Companies rely on advanced quality management system, strong technology development strength - in constant demand by customers for the purpose of focus, the commitment to the development of China's vacuum valve creatively continuously reliable performance, beautiful appearance of the products, have in hand , gas, electric butterfly valve, valve, damper valve, electromagnetic valve differential pressure, electromagnetic valve, ball valve, valve plates, etc. more than 10 series vacuum valves, as well as various specifications and models of high school low-pressure valve and hydraulic control valves.

公司依靠先进的质量管理体系，雄厚的技术开发力量—在不断地以顾客需求为关注焦点的宗旨下，致力于我国真空阀门的发展，创造性地不断推出性能可靠，外形美观的产品，有手，气、电动的蝶阀、隔膜阀、挡板阀、电磁压差阀、电磁截止阀、球阀、插板阀等10多个系列真空阀门，以及各种规格和型号的高中低压阀门和水力控制阀门。

River Nantong advantage machine building the limited company is thecollection branch, the labor, the trade integration large-scalemachine manufacture enterprise, the main product includes:- Makes each kind of different type glazed tile, the clay tile, theshale tile, ancient constructs the tile, ancient constructs the brick,the shaped brick, the water drop,猫头 the many kinds ofspecifications vacuum bricks and tiles machine and ordinary crowds thetile machine, the entire automatic tile press;- Makes each kind of different shape hollow brick to be big, middle,the small vacuum brick moulding machine;- Makes each kind of different shape cement tile the entire automaticmould pressing encaustic tile machine;- Makes each kind of different shape artificial brick the many kindsof specifications entire automatic artificial brick machine

河南通利机器制造有限公司是集科、工、贸一体化的大型机械制造企业，主要产品有：——制造各种不同类型琉璃瓦、黏土瓦、页岩瓦、古建瓦、古建砖、异型砖、滴水、猫头的多种规格的真空砖瓦机和普通挤瓦机、全自动压瓦机；——制造各种不同形状空心砖的大、中、小型真空制砖机；——制造各种不同形状水泥瓦的全自动模压彩瓦机；——制造各种不同形状砌块的多种规格的全自动砌块机

And a relative preparation is characterized in that according to mol ratio (0.8-0.975):(1.8-1.95):(0.010-0.15):(0.010-0.15) to prepare and mix Mg powder, B powder, C nanometer powder, and SiC nanometer powder uniformly to be filled into an iron tube or iron-copper composite tube to be sealed, rotationally forges, draws and rolls to obtain MgB2 superconductive material containing C and SiC nanometer powder, or tablets the raw powder mixed uniformly via a tablet press, to obtain MgB2 superconductive block containing C and SiC nanometer powder, arranges obtained band or block in a vacuum furnace, vacuums and fills argon gas, keeps temperature for 0.2-3h at 600-1200DEG C, and obtains MgB2 superconductive material containing C nanometer powder and SiC nanometer powder.

制备这种MgB 2 超导材料的方法，其特征在于，将Mg粉，B粉，C纳米粉，SiC纳米粉按照摩尔比(0.8-0.975)∶(1.8-1.95)∶(0.010-0.15)∶(0.010-0.15)配制并混合均匀，装入铁管或铁铜复合管中密封后，按顺序先后进行旋锻、拉拔、轧制，得到含C和SiC纳米粉的MgB 2 超导线材；或者将混合均匀的原料粉用压片机进行压片，得到含C和SiC纳米粉的MgB 2 超导块材；将得到的线带材或块材放置真空炉中，抽真空后充入氩气，在600℃-1200℃保温0.2-3小时，最终得到含有C纳米粉和SiC纳米粉的MgB 2 超导材料。

Vacuum freeze-drying is a technology used for drying, color protection, fresh keeping, or nutrition preservation of food, biologics, biomaterials, or micro/nano materials. Its principle is to use sublimation principle under the vacuum state, and to obtain dried products, whereby frozen water in the material sublime or shift directly from the frozen state to a gas state, and watery element is removed without melt.

冷冻真空乾燥技术是一项适用於食品、生物制品、生医材料、微奈米材料的乾燥、护色、保鲜、保存、保营养成分的技术，其原理是在真空状态下，利用升华原理，使预先冻结的物料中的水分不经过冰的融化直接以冰态升华为水蒸气而除去，从而获得乾燥制品。

Using high frequency induction brazing and TiZrNiCu filler metal, the shear strengths of the joints were low. The maximum shear strengh was only 102.1MPa, which was lower than the maximum strength of vacuum brazing. The reasons may be that excessive intermetallics, holes and oxidation existed in the joint. So TiZrNiCu filler metal isn't fit for non-vacuum brazing.The stress variation, stress distribution and crack-sensitive regions during the cooling process of brazing have been studied by Marc non-linear software.

采用气体保护高频感应加热、TiZrNiCu钎料钎焊时，接头的强度普遍偏低，最高的剪切强度只有102.1MPa，远远低于辐射加热真空钎焊的强度，其原因是接头中局部生成了过量的金属间化合物，且产生氧化，接头中含有较多的气孔等影响了接头强度，因此可以认为TiZrNiCu钎料不适合在非真空条件下的钎焊。

Thanks to the experiences accumulated by years, the advanced software such as Proe, Autocad, Mastrecam and Solikorw, as well as the professional surface treatment technologies and processes like oil spraying, silk screen printing and vacuum prototyping, the products with high quality can be fast molded and timely delivered by Shuangyue, obtaining both supports and acclamations from the customers.

多年的成熟制做经验，加上引进了一台国际先进的激光设备，五台CNC加工中心；五台车床；五台铣床，一台真空复模机等现代化设备；运用Proe，Autocad，Mastrecam，Solikorw等一系列先进电脑软件，还拥有专业的表面处理技术及流程，包括喷油；丝印；真空复模，使我们的产品快速成型；品质卓越；交货准时，受到了众多客户的支持与好评。

The second issue is the question of the treatment of vacuum, NAXX final BOSS spider area I believe we are all familiar with, the treatment of three seconds for the vacuum tank to reduce the injury is a huge skills test.

第二个问题是关于治疗真空期的问题，NAXX蜘蛛区的最后BOSS相信大家都熟悉，3秒的治疗真空期对于坦克的减伤技能是个巨大的考验。

With the established model and the data of power needed in cycle cooling water system, the best vacuum value of condenser can be determined, and energy loss result by deviation of some main operation parameter can also be determined, compared with conventional models , the model established by us has the advantage of pertinence to the actual equipment since the sample data were collected from the operating equipment.

利用该模型和循环水系统功耗模型可确定不同工况下的真空运行最优值，为凝汽器真空运行最优值的确定提供了一个全新的方法，同时利用该模型计算几个主参数偏离基准值的能损偏差，同传统的运行参数基准值模型和能损偏差分析方法相比，该模型具有明确的设备针对性。

The characteristics and the advantages of the VD4 Vacuum Circuit Breaker s are de-scribed,as well as its type test.

本文分析了断路器开断小电感性电流时产生截流过电压的原理，提出了抑制过电压的方法，论述了 VD4真空断路器的结构特点和优越性能，介绍了其完整的型式试验，总结了真空断路器的操作要领。

This new refining process is termed "ladle-refining" or "secondary steelmaking". It is discussed in three parts: The development of various ladle-refining process including vacuum refining and normal pressure refining such as synthetic slag treatment, argon stirring, vacuum degassing VC, SLD,...

本文分三个方面进行讨论：(1)各种炉外精炼法的发展，包括真空精炼和常压精炼，例如合成渣洗、吹氩搅拌(Gazal、CAB、SAB法)、真空脱气(VC、SLD、TD、TD-VC、TD-SLD、RH、DH、FinKl和Gazid法)、带电弧加热的炉外精炼(ASEA-SKF、FinKl-VAD和LF法)、喷射冶金以及不锈钢的精炼法(AOD、CLU、VOD、SS-VOD、KVOD/VAD、RH-OB和VODC法)，(2)我国炉外精炼技术的现状，(3)发展炉外精炼必须注意的一些问题。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐