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This paper mainly studies effect and influence factor that typical corrosive medium (muriatic acid, vitriol, nitric acid, sodium hydroxide, sodium chloride etc.), consistence and condition temperature acts on the material coated on castiron centrifugal interface (PFEP, PPS, CPE, remodeled epoxy). It is studied that powder electrostatic spray, suspend fluid spray, suspend fluid electrophoresis underside coat etc. technics influences on coat quality coated with above four anticorrosive material. The property analysis is done that above four anticorrosive material and three coat technics adapt to centrifugal pump frame and running dynamic condition. In addition, the effect is introduced that castiron centrifugal coated anticorrosive material is used in coal water with alum.

本文侧重研究了典型腐蚀工作介质盐酸、硫酸、硝酸、氢氧化钠碱、氯化钠盐等品种、浓度、环境温度，对铸铁离心泵过流面的聚全氟乙丙烯、改性聚苯硫醚、改性氯化聚醚、改性环氧四种防腐涂层材料的试验使用效果和影响因素分析；研究了四种涂层材料粉末静电喷涂、悬浮液喷涂、悬浮液电泳底涂等涂装方法工艺对涂层质量的影响；四种涂层材料和三种涂装方法对离心泵结构和运行动态环境的适应性分析；介绍了铸铁离心泵防腐涂层在煤矿矾水中的应用效果。

This paper explores shareholder approach, material approach and investment approach to cash flow, and it is concluded as follows: Net present value calculated is equal for shareholder approach and material approach, but for fixed assets investment projects, shareholder approach is far more concise and workable than material approach and provides direct cash flow information with clear and useful economic significance. Investment approach analyzes forecast cash flow for investment projects from a different angle, not only offering additional managerial accounting information, but also testing the properness of and providing theoretical support for shareholder approach and material approach.

通过对股东现金流量法、实体现金流量法和全投资现金流量法模型的研讨，提出如下观点：股东现金流量法与实体现金流量法计算的净现值是相等的，但对寿命期有限的固定资产投资项目，股东现金流量法远比实体现金流量法简洁易懂，便于操作，其提供的现金流量信息直观，经济意义明晰，有用性强；全投资现金流量法从另一个角度进行投资项目的预期现金流量分析，不但能提供补充的管理用会计信息，而且能对股东现金流量法模型的正确性进行验证，互相提供理论上的支持。

Compared with similar advanced equipment, FPP Series mill has advantages as follows,① Adding the cutting and grinding function;② Extend the time of material pressing and cutting and grinding;③ Solve the sensitivity of keeping the proportional spacing and proportional thickness;④ Widened material input size;⑤ Material output size are in a perpetual state;⑥ Multifunctional machine is used to dry and grind and filtrate material;⑦ Auxiliary equipment is less and covering is small and investment is small;⑧ Noise is low and dust is small, it is beneficial to protect environment and keep physical and mental health for operation workers.

FPP 型系列磨机的结构形式是电机拖动减速机带动磨盘旋转，带有压力的磨辊在磨盘上自转，对物料进行碾压，磨内的物料在旋转离心力的作用下均匀进入碾磨区，磨辊对物料实施挤压、剪切、研磨，故破碎能力大，粉磨能力强，与同类先进设备相比：①增加了剪切研磨功能；②延长了物料挤压剪切研磨时间；③解决了对物料粉层均匀一致，厚度一致的过于敏感性；④拓宽了对物料的进料粒度；⑤物料的出料粒度永远处于受控状态；⑥可以对物料进行烘干、粉磨、筛分一机多能化；⑦辅机设备少、占地小、投资省；⑧噪音小、扬尘点少，有利于环保和操作工人的身心健康。

Plastic should lower 3 steps, because plastic is a step to add meltresin material to cyclinder , Higher stick of resin material ,higher screwback pressure. Screw speed differs depending on decomposing temperatureof resin material ,Higher screw speed ,Higher trim force of resin,higher cyclinder temperature. Some resin material may decomposes so it setscrew speed in mid-speed such as 45-75%, In plastic step setting screwback pressure is very important, Higher screw back pressure ,higherquality of product screw back pressure make resin structure order, Moldingproduct is beautiful and volume stable. But ,it maybe flow if screw

再复杂的熔胶旋转过程最多不会超过三段，因为熔胶本身就是存在于把胶熔进料筒的过程，如果原料粘度大，熔胶压力则大，但速度则应取决于原料的分解温度，熔胶速度越快，原料中的剪切力则会越大，料管温度则越高，局部原料产生分解的可能性则会越大，故一般熔胶会采用中速为宜，如45%-75%，熔胶同时会碰到一个比较重要的环节，那就是背压的使用，产品精度要求越大，背压的使用则更大，背压可使原料分子间结构更紧密，成型出的产品则尺寸更稳定，外观越好。

Plastic ground material: rubber ground material, PVC ground material, shapen stone ground material, the plastic ground floor parts for engineering or special use , consumable and blanket technology, pad, mould, installation tools, cleaning equipment, adhesives, decorative items, design and printing of ground materials, decoration and furnish project, design services.

塑料地面材料：橡胶地材、 PVC 地材、石塑地材及工程用或特种用途塑料地铺地面材料配件、耗材及铺盖技术、衬垫、模具、安装工具、清洁设备、粘合剂、装饰用品、地面材料的图案设计及印制、家装装饰装修工程、设计服务等。

The housing material is the PET glass fiber enhanced and anti-burning (V-0) imported insulation material; the material of the contact element adopts the red copper or the copper alloy; the material of the contact segment is the beryllium bronze, the surface of the contact element is glided or silver-gilt.

其壳体材料采用PET玻纤增强型、阻燃型（V-0）进口绝缘材料；接触件材料采用紫铜或铜合金；接触部分的材料为铍青铜，接触件表面镀金或银。

The methods of processing waste substrate when the amount is small are as follows: replace the sawdust to be the filling material of sculpture handicraft; make the soundproofing board, ceiling, vase and so on; be used as powder for the coating, paving material or filler for plastic preparation and so on; be reused as the reinforcing material and insulated gluing material or used as the fire retardant chemical.

摘 要：我国对废弃线路板基板的回收主要是采取填埋和焚烧的方法，处理少量废弃基板时有以下几种方法：取代木屑作为雕塑工艺品的填充物；制造隔音板、天花板、花瓶等；作为粉末用于涂料、铺路材料或是塑料制备的填料等；作为增强材料和绝缘胶粘材料重新利用或做阻火剂等。

5 Material type 材料类型 4.5.1 Antistatic Material: the material that used to prevent / inhibit the generation of the Triboelectric Charge; or the material that only generate less than 200V Triboelectric voltage; it has no requirement about surface resistivity and volume resistivity .

抗静电材料–能抑制摩擦生电的材料；摩擦电压在 200V 以下的材料；防静电材料没有表面电阻率或体积电阻率的要求。

In recent years, dasso has successfully patented some new products in the field of bamboo technology including indoor and outdoor bamboo decorative material and wind turbine blade. in 2004, dasso's two-ply bamboo flooring was awarded china national star promotion project; in 2005, fire-proof ceiling board developed by dasso, was used in the madrid international airport and this project was honored with riba award; in 2006, dasso's bamboo decorative material was used for the dashboard of bmw vehicles. there are more than 100,000 bmw x5 and x6 model which are fitted with this high quality material all over the world; towards the end of 2008, the 1st set of wind turbine bamboo blades which dasso supplied the high strength bamboo material was installed in northern china; in march of 2009, dasso began to introduce its outdoor strand woven bamboo into the market and this was used in projects such as the shanghai world expo 2010 as riverfront decking.

大庄近年来在竹子科技领域有多项发明专利应用于新的产品，这些新产品包括竹材室内外装饰材料以及环保风能竹材料。2004年，大庄的两层竹地板被国家授予星火计划推广项目；2005年，大庄研发的防火竹制天花板被应用于西班牙马德里国际机场，该项目并荣获英国皇家斯特灵奖；2006年，大庄将竹材推进到宝马汽车内饰，现有超过十万辆bmw x5、x6奔驰在世界各地；2007年，大庄的一项竹装饰板荣获国家科技发明奖；2008年底，由大庄提供的竹制风能叶片材料的世界第一个竹制风能叶片系统在中国北方张北投入使用开始发电。2009年3月，大庄研发的竹户外材料开始投放市场，并被应用到上海世博会的诸多项目之中。

For the synthesis reaction of chalcone, cyclohexanone aldolization and biodiesel,γ-Al_2O_3-NaOH-Na solid superacid has a satisfactory catalytic activity. With hypnone and phenylaldehyde as raw material, amount of catalyst 7.5% wt% of material, mole ratio of hypnone and phenylaldehyde 1:1.1, reaction temperature 40℃, after 3 hours, the yield of chalcone can be up to 96.88%. With cyclohexanone as raw material, amount of catalyst 10% wt% of material, reaction temperature 190℃, after 3 hours, dimmer of cyclohexanone can be up to 85.66%.

将该固体超强碱催化剂应用于查尔酮、环己酮自缩合以及生物柴油的合成反应中，该改性固体超强碱催化剂表现出了良好的催化活性：以苯乙酮和苯甲醛为原料，反应温度为40℃，催化剂用量为反应物总质量的7.5％，苯甲醛与苯乙酮摩尔比为1：1.1，反应3h查尔酮产率可达96.88％；以环已酮为原料，催化剂用量为原料总质量的10％，反应温度为190℃，反应3h，二聚物的总收率可达85.66％；以动物油和甲醇为原料，醇油摩尔为9：1，催化剂用量为动物油质量的2％，反应温度为70℃，反应3h后，生物柴油的收率可达91.8％。

Objective To study the effect of chitosan in the prevention of fibrous scar formation in the epidural space after laminectomy.

目的 观察选择性脊神经后根切除术椎板切除后硬膜外几种防瘢痕粘连物质的作用并探讨其机制。

On his way to the lift, he looked back to us or was it me his eyes pointing?

当他要进电梯时，他回头看我们（或者说是我，他的眼光？