钢

Steel moment-resisting frames with welded beam-to-column connection were traditionally regarded as having excellent performance, and widely adopted in steel constructions, but this opinion changed after the 1994 Northrige earthquake and the 1995 Hyogoken-Nanbu earthquake. These earthquakes also arouse engineers to resurvey the behavior of end-plate connections. It is well known that end-plate connections have definite flexibility, which can increase damp, prolong period, and decease swing of structure. So it can reduce the damage, and is one of the best choices for resisting earthquake.

中文题名钢框架梁柱端板连接在循环荷载作用下的破坏机理及抗震设计对策副题名外文题名 Collapse mechanism and design criterion of steel beam-to-column end-plate connections under cyclic load 论文作者郭兵导师顾强学科专业结构工程研究领域\研究方向学位级别博士学位授予单位西安建筑科技大学学位授予日期2002 论文页码总数127页关键词钢结构框架结构抗震设计钢框架梁柱端板连接馆藏号BSLW /2003 /TU392 /6 传统观点认为，梁柱焊接刚性连接具有较好的抗震性能，因此在工程中得到了广泛地应用，但1994年的Northrige地震和1995年的阪神地震改变了这种传统观点，这两次地震也引起了工程技术人员对端板连接的再审视。

These compounds can result in sedimentation and rigidification in the structure of steel.

根据钢的成分和钢处理过程的温度情况，这些化合物在钢中能起沉淀硬化和晶粒细化的作用。

Measuring conditions were analyzed,such as lamp current,slit width,air and acetylene flow.

铜是钢中的有害杂质，能使钢产生热脆性，破坏钢的焊接性能。

It introduces the advantages,choice of material, economic span and applied situation of fast-developed door-style soft steel structure recently in China,and points out the defects in design and construction.

介绍了目前发展较快的门式轻钢结构的优点、材料的选择、经济跨度以及目前门式轻钢结构在我国的应用情况，指出了设计与施工上存在的不足，最后进行了总结，以提高人们对门式轻钢结构的认识。

It can produce many kinds of metal products. Such as flat washer, spring washer, punching hardware, machine parts and so on. All the products are in various standards and specifications made of materials(low carbon steel,45# steel,50# steel, 65Mn steel, A2、A4、copper、aluminum) which are imported from Korea, Japan, Taiwan and so on.

公司主要生产各种标准、各种规格、各种材料（低碳钢、45#钢、50#钢、65Mn钢、A2、A4、铜、铝）的平垫圈、弹簧垫圈、齿轮垫圈及其他特种垫圈、冲压件、机械零部件，材料主要来源于韩国、日本、台湾等国家和地区。

Heat treatment technique of forged grade E steel coupler yoke has been studied in this paper, in which the real-time temperature measuring method is utilized to determine the reasonable heat treatment regulation for mass production of forge.

本文研究了锻造E级钢钩尾框的热处理技术，采用实时测温技术确定了锻造E级钢钩尾框批量生产的合理的热处理工艺规范，并通过计算机模拟优化方法确定了E级钢材料的最佳热处理工艺参数。

More economic and trade Co., Ltd. is established in 2003, is committed to a few sets of light steel structure fittings, in a very short period of time, our products have been with the development of light steel structure constant updating and improvement of our products has been widely used in all parts of the country in light steel building.

昆明宁越经贸有限公司是2003年成立，是国内少数几家致力于成套轻钢结构配件，在很短的时间内，我们的产品已随轻钢结构的发展而不断更新和完善，我们的产品已广泛运用在全国各地的轻钢建筑中。

Vanadium content in steel,deformation temperature,deformation rate,cooling rate,on high temperature thermoplasticity of low alloy vanadium steel was quantitatively investigated on GLEEBLE - 1500 thermal - mechanical simulator by means of orthogonal design test.

应用GLEEBLE-1500热力模拟机，采用正交分析法定量研究了低合金钢中含钒量、变形温度、变形速率、冷却速率等因素对含钒钢高温热塑性的影响，用数学回归法建立了各影响因素与钢的热塑性间的数学模型，为制定含钒钢连铸工艺提供了依据。

In the paper, the friction coefficient of the friction pairs of Al2O3 matrix ceramic/45# steel during sliding experiments were studied, and the worn trace's micrographs of Al2O3 matrix ceramic were observed and analyzed, and the wear mechanism of Al2O3 matrix ceramic in dry friction and oil Iubrication were analyzed.

摘 要：本文对Al2O3基陶瓷材料/45#钢摩擦副的摩擦系数与45#钢/45#钢的摩擦系数作了对比滑动摩擦试验研究，观测分析了Al2O3基陶瓷材料磨痕形貌，并就干摩擦，油润滑状态下Al2O3基陶瓷材料的磨损机理进行了分析。

Reportedly, in recent years, regional manufacturing and selling counterfeit and shoddy steel repeated offences, particularly regional production "of steel in" and use "of the steel to" unburnt earthenware Luowengang rolled steel and other construction issues very prominent.

据了解，近年来，区域性制售假冒伪劣钢材的违法行为屡禁不止，尤其是区域性生产"地条钢"和用"地条钢"坯轧制螺纹钢等建筑钢材的问题十分突出。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了