材料

The cathode is generally one of three materials: a layered oxide, such as lithium cobalt oxide, one based on a polyanion, such as lithium iron phosphate, or a spinel, such as lithium manganese oxide, although materials such as TiS2 were originally used.

阴极通常是以下三类材料：一种层氧化物，例如钴酸锂、一种阴离子聚合物，例如磷酸锂铁，或者是一种尖晶石，例如锰酸锂，象例如二硫化钛之类材料曾经是最初使用的材料。

The results show that, the coefficients of welded joints are both greater than 0.9, but the yield strength of weld joint filled with Al-Mg-Zr-Sc welding wire is greater 100 MPa than that of filled with Al-Mg-Zr welding wire. It indicates that the Al-Mg-Zr-Sc welding wire is the best alteration of filling materials to weld of Al-Mg-Sc alloy.

但采用Al-Mg-Zr-Sc合金焊丝为填充材料时，焊缝晶粒组织明显细化，熔合区形成的细小等轴晶层提高了基材与焊缝填充材料的结合力，焊接接头的屈服强度比采用Al-Mg-Zr合金焊丝为填充材料时提高了100 MPa，显著提高了Al-Mg-Sc合金焊接构件的许用强度，因此焊接Al-Mg-Sc板材更宜采用Al-Mg-Sc-Zr焊丝。

Superhard knife tool materials is a promising tool one, it has many advantages, such as excellent cutting performance, long serving life and good machining quality, and has become an important knife tool materials which every country makes great efforts to develop.

超硬刀具材料是一种大有前途的刀具材料，具有优异的切削性能、高使用寿命和加工质量好等优点，已成为世界各国竞相发展的刀具材料之一。

The preliminary results show that the technique can not only in voke fast heating and rapid cooling proceses inside surface lagers of the samples, but also implant the required element into the material surface.

试验结果表明，该技术能使材料表面产生快速加热和快速冷却，并能把所需要的元素注入材料表面，在材料表层有新的氮、碳化合物相产生。

China's new materials industry despite a late start, but in the country's strong support, the country has 29 provinces and municipalities to establish a number of bases for industrialization of the material characteristics, involving iron and steel, non-ferrous metals, chemical light industry, building materials, and other traditional industries and optoelectronic materials and devices, semiconductor lighting, and other emerging industries.

我国的新材料产业虽然起步较晚，但在国家的大力扶持下，目前已在全国29个省市建立了多个材料特色产业化基地，涉及钢铁、有色、化工轻工、建材等传统产业和光电子材料与器件、半导体照明等新兴产业。

To assist with the production of capability statements and marketing materials such as proposals, PowerPoint presentations, press releases, brochures, mailshots and other promotional materials.

协助制作能力陈述和营销材料，如建议书、PowerPoint展示文件、新闻稿、宣传册、邮箱投递材料和其他促销材料。

The characteristics and trends in material research／development at present are discussed,focusing on the new progress in material research done by the Institute of Metal Research CAS.What were studied include ultra-high strength maraging steel,nickel-free austenite stainless steel for medical applications.coronary artery bracket for drug's slow release,antibiotic stainless steel and metal hydride for the use of air conditioner.

摘 要：首先分析了材料研究与发展中呈现出的新特点和新趋势，着重介绍了中国科学院金属研究所相关课题组近年来在超高强度马氏体时效钢、新型医用无镍奥氏体不锈钢、缓释药物冠动脉支架、抗菌不锈钢、金属氢化物空调等新材料及新材料技术方面的研究新进展。

The number of effective loci, the percentage of polymorphic loci, Shannon's Information index and effective number of alleles is in turn109, 61.58%, 0.3135, 1.3641 for RAPD makers, and 79, 71.82 %, 0.3577 and 1.4037 for ISSR markers; Jaccard's genetic similarity matrice and dendrograms for the 10 individuals were formed based on RAPD and ISSR-generated polymorphic bands.

基于扩增条带数据库建立了各自的Jaccard遗传相关系数矩阵，构建了相似的分子树状图，将10个供试材料分为2类：一类群含组培85.5、大田85.5、组培9302、大田9302、金状元和金白6个材料；另一类群含北京1号、大红袍、地黄9104和野生地黄4个材料。

An approximate analytical approach, which can be used to analyze the optical characteristics of metal-clad step or graded index waveguides in near cutoff, is presented at first. The mode propagation characteristics of metal-clad step index waveguides in near cutoff are comprehensively analyzed.

GaAs/GaAlAs异质结光波导材料是目前集成光学中的重要材料，本论文在系统介绍外延生长技术的基础上，利用普通的液相外延炉，成功地生长出可用于光波导器件制作的、表面较光滑并具有较大面积（14×16mm〓）的GaAs/GaAlAs异质结光波导材料，C-V法测得波导层载流子浓度为2—4×10〓cm〓，Al-Schottky接触的反向电压大于20伏，平板波导和脊波导通光实验良好。

The theoretical and experimental studies on metal-carbon-based hydrogen storage materials in recent years are reviewed in this paper, including metal-decorated carbon nanotubes,C60 and transition-metal-ethylene complexes, and so on.

随着计算材料学的发展，利用密度泛函和量子机制第一性原理研究已知材料储氢性能和寻找潜在的新型优良储氢载体已成为当前研究储氢材料的有效方法。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！