材料

Indoor air sources of formaldehyde are mainly in the following aspects : 1, the plywood used for interior decoration, Ximugongban, medium density fibreboard and shaving board, and other artificial plate because formaldehyde has strong sexual bond, has strengthened plate and the hardness control, corrosion functions, Therefore, the current production of imitation board use Jiaonianji merits to formaldehyde as the main ingredients thiourea aldehyde resins, plate, residual and did not participate in the response formaldehyde will gradually release of the surrounding environment is a indoor air formaldehyde main ;2, using imitation board manufacturing furniture, some manufacturers in the pursuit of profit, the use of unqualified plate. In preliminary front face material reuse inferior glue, the manufacturing processes are not standardized, as a result of customers buying home, to buy a small emission points ;3, containing formaldehyde content and may distribute to the outside other categories decorative materials, such as stickers Qiangbu, with wallpapers, chemical fiber carpet, foam, paint and paint, etc.;4, combustion, emit formaldehyde certain materials, such as cigarettes and some organic materials.

室内空气中的甲醛来源主要有以下几个方面：1、用作室内装饰的胶合板、细木工板、中密度纤维板和刨花板等人造板材，因为甲醛具有较强的粘合性，还具有加强板材的硬度及防虫、防腐的功能，所以目前生产人造板使用的胶粘剂是非曲直以甲醛为主要成分的脲醛树脂，板材中残留的和未参与反应的甲醛会逐渐向周围环境释放，是形成室内空气中甲醛的主体；2、用人造板制造的家具，一些厂家为了追求利润，使用不合格的板材，在粘接贴面材料时再使用劣质胶水，制造工艺不规范，结果顾客买回家去，等于买回了一个小型废气排放站；3、含有甲醛成分并有可能向外界散发的其他各类装饰材料，比如贴墙布，贴墙纸，化纤地毯、泡沫塑料、油漆和涂料等；4、燃烧后会散发甲醛的某些材料，比如香烟及一些有机材料。

This paper presents the Machining Tool geometry of the former flank, the main flank, flank, the main cutting edge, Under the cutting edge tip cutting plane, the main section, the former Kok, horn, wedge angle edge angle, pointed knife, the blade angle, vice horn, Under the Frontier concept, the concept of cutting consumption, and the general circumstances of their choice method for processing slender shaft. cast iron materials, aluminum, stainless steel, rubber materials, plexiglass material, cloth bakelite materials, high temperature alloys, aluminum-magnesium alloy, hardened steel, the typical trapezoidal thread, the thread Triangle, Speaking at the trapezoidal screw thread pitch of the Tool geometry of the selection methods and cutting the amount of cutting fluids reasonable choice.

本文介绍了在机械加工中车刀几何角度中的前刀面、主后刀面、后刀面、主切削刃、副切削刃刀尖切削平面、主截面、前角、后角、楔角主偏角、刀尖角、刃倾角、副后角、副前角的概念、切削用量的概念、以及一般情况下的它们的选择方法，进行加工细长轴、铸铁材料、铝合金、不锈钢、橡胶材料、有机玻璃材料、夹布胶木材料、高温合金、铝镁合金、淬火钢、典型梯形螺纹、三角螺纹、特在螺距的梯形螺纹等的车刀几何角度的选取方法切削用量及切削液的合理选择。

Thermal insulation material used in air-conditioning circuitry system may initiate the fire,therefore there is a a higher request for improvement on combustibility of thermal insulationfoam, and it is urgently to strengthen the research on flame-resistant thermal insulation forair-conditioning systmem; so many aspects such as retarding mechanism, heat degradationcharachteristic, and prediction in kinetics and so on, of fire retardant foam become a newresearch subject.

空调系统的管路系统保温材料可引发火灾，因此对泡沫保温材料的燃烧性能提出了更高的要求，亟需加强对空调用泡沫阻燃材料的研究，而泡沫阻燃材料的阻燃机理、热解特征和动力学预测等方面的问题形成一个新的研究课题。

By the result from SSCV and PSCA experiment, better electorchemical and cyclic abilities were found in the material 〓 prepared in the oxygen atmosphere. Metal cobalt and nickel were electrolysed in parallel to prepare 〓 cathode.

在〓系列中，随着正极材料中镍的含量增加，正极材料的充放电容量也增加，而且，镍含量高的正极材料的循环性能也较镍含量低的正极材料优异，其中〓性价比最好。

Honeywell Specialty Materials is a $4.4 billion global leader in providing customers with high-performance specialty materials, including fluorocarbons, advanced fibers and composites, specialty additives and films, customized research chemicals, electronic materials and chemicals, and technology andmaterials for petrochemical refining.

作为全球领先的高性能特殊材料供应商，霍尼韦尔特殊材料集团向客户提供碳氟化合物、高级纤维和复合材料、专用添加剂和薄膜、定制的研究化学品、电子材料和化学产品，以及用于石油提炼、石油化工的技术和材料。2005年销售额为44亿美元。

The wear debris of three semi-metallic friction materials reinforced by low carbon steel fiber, brass fiber and pure copper fiber respectively, and grey cast iron couple woren at different temperatures were studied by XRD and EDAX. Wear properties were analyzed together with the surface images got by scanning electron microscope.

摘 要：采用X射线衍射和X射线能谱分析对分别使用低炭钢纤维、黄铜纤维和紫铜纤维增强的3种半金属摩擦材料与灰铸铁在不同温度下滑动摩擦形成的磨屑进行分析，并结合扫描电子显微镜观察摩擦材料表面形貌，分析材料的磨损特性，并对黄铜纤维和紫铜纤维增强的摩擦材料磨屑成分进行对比分析。

The wear debris of three semi-metallic friction materials reinforced by low carbon steel fiber,brass fiber and pure copper fiber respectively,and grey cast iron couple woren at different temperatures were studied by XRD and EDAX.

采用X射线衍射和X射线能谱分析对分别使用低炭钢纤维、黄铜纤维和紫铜纤维增强的3种半金属摩擦材料与灰铸铁在不同温度下滑动摩擦形成的磨屑进行分析，并结合扫描电子显微镜观察摩擦材料表面形貌，分析材料的磨损特性，并对黄铜纤维和紫铜纤维增强的摩擦材料磨屑成分进行对比分析。

The wear debris of three semi-metallic friction materials reinforced by low carbon steel fiber, brass fiber and pure copper fiber respectively, and grey cast iron couple woren at different temperatures were studied by XRD and EDAX. Wear properties were analyzed together with the surface images got by scanning electron microscope.

采用X射线衍射和X射线能谱分析对分别使用低炭钢纤维、黄铜纤维和紫铜纤维增强的3种半金属摩擦材料与灰铸铁在不同温度下滑动摩擦形成的磨屑进行分析，并结合扫描电子显微镜观察摩擦材料表面形貌，分析材料的磨损特性，并对黄铜纤维和紫铜纤维增强的摩擦材料磨屑成分进行对比分析。

Shanghai Sinopolymer Chemical Material Co., Ltd. is a professional supplier to floor materials and engineering service, mainly undertaking application of special floor materials and of refurbishment/reflooring old floor ,such as epoxy coatings, anti-static coatings, corrosion protection coatings, fireproofing coatings, etc.

上海司诺普化工材料有限公司是一家专业的地坪材料与工程服务供应商，主要承揽各类特种地坪材料的施工及旧地面翻修工程施工，如环氧地坪涂料系列、防静电涂料系列、耐腐蚀涂料系列、防火涂料系列、耐蚀系列树脂材料等产品。。。

A new idea for improving the property of AgNi contact materials is proposed.

根据国外的研究成果和国内目前的产品结构，AgSnO2材料、AgNi材料、AgZnO材料将是目前可作为替代AgCdO材料的主要品种。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。