材料

The stability of sliding contact of metal impregnation carbonmaterial is worse than that of copper-base powder metallurgy material.

4浸金属碳材料的减摩性不如铜基粉末冶金材料的，其摩擦系数比铜基粉末冶金材料的摩擦系数大，其值分别大了14.4％—150％；同时，浸金属碳材料的摩擦稳定性也不如铜基粉末冶金材料的。

As we all know, thermochemistry is the direct application of thermodynamic in the field of chemistry.

近年来，纳米结构材料引起人们极大的兴趣，对这些由有限个原子构成的小颗粒，再由这些小颗粒凝聚而成的纳米结构材料在热化学方面有什么新的特点，它与颗粒尺寸的关系和粗晶、多晶材料所遵循的规律是否一致，已成功描述粗晶和多晶热力学行为的经典热力学理论对纳米材料是否还适用，这些问题是纳米材料的深入研究和推广应用所必须解决的关键问题。

According to the chemical components and biological characteristics, the materials for the repair comprise unabsorbable materials, absorbable materials, composite materials and biological materials.

疝修补材料依据化学成分和生物学特性，可以将其分为不可吸收材料、可吸收材料、复合型修补材料及生物型材料。

The invention discloses a dielectric hole-microhole composite material and synthesizing method in the inorganic porous material, adsorbing material and catalytic material technical domain, which comprises the following steps: adopting zeolite molecular sieve as raw material; reacting with sodium bisilicate solution under 30-60 deg.c for 10-300 min; disintegrating particle part of zeolite molecular sieve into piece with microhole structure; adding cetyl trimethyl ammonium bromide as molder; adjusting pH value of mother liquid to 10-12; aging 1-8h; adding in the high-pressure autoclave to do water heat synthesizing reaction at 80-130 deg.c for 24-72h; separating solid; washing; drying; sintering under 500-600 deg.c for 5-10h; obtaining the Si-Al porous material with dielectric hole and microhole composite structure.

本发明属于无机多孔材料、吸附材料和催化材料技术领域，涉及具有介孔-微孔复合材料及其合成方法。其特征是以沸石分子筛为原料，用偏硅酸钠的水溶液在30～60℃反应10～300分钟，使沸石分子筛的颗粒部分解离形成具有微孔结构的碎片，加入模板剂十六烷基三甲基溴化铵，然后调节母液pH值为10～12，老化1～8小时，然后加入高压釜于80～130℃进行水热合成反应。反应24～72小时后，分离出固体，水洗、干燥，然后于500～600℃焙烧5～10小时，得到具有介孔和微孔复合结构的硅铝多孔材料。本发明的效果和益处是所发明的合成方法可用于合成多种沸石结构和介孔结构的复合材料，所合成的材料经过质子交换可以具有较强的酸性，在吸附和催化领域具有广泛应用前景。

Molybdenum disilicide has gained industrial importance due to its high melting point, high emissivity, stable resistance over long periods of time and the ability to form a self-healing protective layer, which possesses an interesting combination of thermophysical and mechanical properties and has potential for structural use and heating in oxidizing environments at high temperature.

MoSi〓具有高熔点、高发射率电阻老化特性好等特点，并通过产生保护膜而具有较好的高温稳定性，因此该材料在工业领域受到重视。其实现了材料的热物理特性和机械特性的有机结合，并使材料在高温氧化环境下作为结构材料和电热材料的使用提供了可能。

In these years a lot ofresearches on these materials have shifted to their behavior under energic particleirradiation, because they have been regarded as promising candidate materials formany important nuclear applications.

近年来大量对这两类材料的研究却逐渐开始关注其在高能粒子强辐照条件下的行为，因为金属氧化物现在被认为是极有潜力的核技术结构材料，而SiC除了作为重要的核工业结构材料之外，作为半导体材料也一直被作为能在极端条件下正常工作的新型半导体材料。

Shanghai CPD Construction Product Co., Ltd is a foreign invested company with headquarter located in Canada. It markets diversified products including polymer floorings, structural grouts and cement based systems across Canada, United States of America and Europe.

上海CPD建筑材料有限公司是加拿大CPD在国内设立的子公司，在上海拥有生产基地和办事处，其主要产品包括有：聚合物地面材料、结构水泥灌浆、修补材料、混凝土硬化剂、环氧砂浆、交通承载防水材料以及相关水泥封闭剂材料等。

The development of magnetic materials was extremely rapid during the 1990's,when magnetic alloys of the rare earth-3d iron group,such as rare earth permanent magnets,giant magnetostriction materials,giant magnetocaloric materials,magnetooptic materials,magnetic amorphous materials,and nanocrystalline magnetic materials,appeared one by one.

稀土-3d过渡族磁性合金材料，如稀土永磁、巨磁致收缩材料、巨磁热效应材料，磁光效应材料等，以及非晶，纳米微晶磁性材料相继问世。1988年巨磁电阻效应的发现已获广泛应用，如读出磁头、传感器以及磁随机存储器等，并发展成为自旋电子学的新学科。

According to the chemical composition and biological characteristics, the hernia repair materials are divided into three kinds: nonabsorbable, absorbable and compound materials.

根据材料学的化学成分和生物学特性可将疝修补材料分为不可吸收材料、可吸收材料和复合型材料3大类。

The genetic relationship between Kava and Piper nigrum has been studied by the AFLP molecular markers. 31 test materials were used in the paper, including 6 Kava genotypes, 23 cultivated and wild peppers, 1 Peperomia pellucida kunth and 1 tobacco.

对6份卡瓦胡椒材料、23份栽培胡椒和野生胡椒材料、1份不同属的草胡椒材料、1份不同科的普通烟材料，共计31份试验材料，进行荧光AFLP分子标记，研究卡瓦胡椒与胡椒及其他近缘野生种的亲缘关系。

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。