材料

Compared with four-row and six-row, tow-row type presents short plant height, node length under short spike, long spike, less number of grain in a spike and heavy grain.

与四棱和六棱相比较，二棱材料极显著地表现出矮杆、穗下节间长度短、穗子长、穗粒数少、千粒重大的特点；四棱材料株高、穗长、穗粒数、千粒重居中，产量显著高于其它类型；六棱材料穗粒数极明显地高于其它棱型。

In this paper, the distribution of biaxial bending strength and the influence of loading rate on fatigue strength in the biaxial bending test by use of soda-lime glass specimen with micro indentation crack are studied.

一、引言在设计和使用玻璃这类脆性材料作为结构元件时，主要应考虑两个问题：材料的强度值具有很大的分散性；(2)在通常的使用环境中，材料的强度会随加载时间的延长而降低〔'。

Taking 2A11 Al-alloy for example,a simple tensile test to bar stock with MTS 810 material test system was done.

1引言在弹塑性力学的发展中，材料简单拉伸试验是建立材料本构关系和测定材料常数的主要宏观方法之一[1，2]。

Their principle is: a sense of temperature material printed in the cup body, the materials used are heat-sensitive materials, high temperature 320 ℃, non-toxic, lead-free, non-chromium, can reach European standards.

它们的原理是：感温材料印刷于杯身，所用的材料属于热敏材料，耐高温320℃，无毒，无铅，无铬，均可达到欧洲标准。

When a small amount of poly was added, the surface resistivity of PVC materials was not sensitive to atmospheric humidity and was further reduced, and the tensile strength and break elongation of PVC, however, were improved.

在上述抗静电PVC材料中添加一定量的聚氧化乙烯，可以降低抗静电材料对环境湿度的依赖性，并提高PVC材料的力学性能和抗静电性能。

In the designing of mutilayer mirrors, according to the intence absorbing and weak reflectence characteristics of soft x ray and physical and chemical trait of materials, the auther firstly select possible material pairs for a giving wavelength.

在多层膜反射镜的设计中，作者首先针对软x射线的强烈吸收和弱反射的特性和材料的物理化学性质，选择了多种可能的配对材料作为候选的配对材料。

Exploring a new technology for snow-melting and deicing of airports tracks is the research background of this project. Through a great amount of experiments, numerical value calculation and theory analysis, a great deal of experiment data are attained, and the resonance law of carbon-fiber reinforced concrete under various power and ice-layer thickness conditions was found.A low-energy concuming, low cost and high thermal effect CFRC road surface concrete structurel material was developed. The snow-melting and deicing mechanism of CFRC was analyzed in the point of view of energy conservation, and the electric-thermal resonance law of road surface structural materials to CFRC concrete materials was set up.

本项目以新型机场跑道的冬季融雪化冰为研究背景，通过大量实验、数值计算与理论分析，获得了碳纤维增强机敏混凝土在不同功率、不同冰层厚度下的响应规律和大量试验数据，找到了一种能耗低、热效高、成本低的CFRC路面混凝土结构材料，并从能量守恒的角度分析了CFRC混凝土融雪化冰机理，建立了研究路面结构材料的导热性能对CRFC混凝土材料的电热响应规律。

Based on the local sources, a new kind of aerated concrete containing efflorescence sand phosphorus slag lime was studied in order to develop the new type wall materials for the Three Gorges Migration Project. The result indicated that by taking the efflorescence sand as the main silicate material and phosphorus slag as a part of substitute materials of calcium, qualified aerated concrete under the low dosage of cement could be produced.

为解决三峡库区移民工程新型墙体材料问题，针对当地资源分布，对风化花岗岩砂磷矿渣石灰加气混凝土的生产工艺参数和微观结构进行了研究，结果表明：采用风化花岗岩砂作为主要硅质材料，磷矿渣作为部分钙质代替材料，可以在低水泥用量下生产出满足国家标准的加气混凝土制品；该体系的主要水化产物是CSH、托勃莫来石、水石榴子石。

Over the past 10 years, the Chinese Academy of Sciences of physics and chemistry of computer to plate materials research group launched the silver salt of computer to plate materials research and development, in nnsfc, national "" 863 plan and Neurobiology, physical science base knowledge innovation projects with the support of the industrialization process in the key technology issues. In 2002 the high-tech came into use in Shantou zhongke silver industry co., Ltd. starts production of silver halide and project approval of computer to plate material, in 2003 the project wins national development and industrialization of high technology demonstration project, and included an important direction of CAs.

近10年来，中国科学院理化所计算机直接制版材料研究组开展了银盐计算机直接制版材料的研究开发工作，在国家自然科学基金委员会、国家&863&计划以及中科院物质科学基地知识创新工程的支持下，解决了产业化过程中的诸多关键技术问题。2002年该高新技术落户汕头中科银实业有限公司开始立项生产银盐计算机直接制版材料，2003年该项目入选国家发改委高技术产业化示范工程项目，并列入中科院重要方向性项目。

Silver tin oxide electrical contact material is prepared with powder metallurgic method.

采用粉末冶金法制备出银氧化锡电接触材料，研究了不同含量的氧化锡对材料组织性能的影响，随着氧化锡含量的增加，材料的导电率和抗熔蚀性能越来越差。

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。