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DEA_Analysis
- 本文应用DEA模型对钢铁上市公司的业绩进行了实证研究。通过DEA有效分析和规模收益分析对十四家上市公司的业绩进行了效率衡量，为投资者理性投资提供了参考依据，也为上市公司提高效率提供了数据借鉴。-Using DEA model of the steel the performance of listed companies in the empirical study. DEA through effective analysis and scale benefit analysis of 14
wangluojihuajishu
- 钢结构网络计划技术及流水施工原理，施工组织方案实例-Steel pipeline network planning techniques and principles of construction, construction program examples
liushuishigongyuanli
- 钢结构网络计划技术及流水施工组织原理（2）-Steel pipeline network planning techniques and principles of construction (2)
gas-carburizing-simulation
- 本实验将使用MATLAB 7.0软件分别对20钢的离子渗碳和气体渗碳过程进行模拟，渗碳时间分别为1h、2h、8h、20h，渗碳温度分别为1203K、1223K、1273K、1323K。对20钢的其中一面进行一维气体渗碳，设该扩散系数和界面传递系数均与渗碳浓度无关，对渗碳厚度、渗碳速度、渗碳量和渗碳时间、渗碳温度的关系进行模拟。-In this study, using MATLAB 7.0 software 20 steel ion carburizing and gas carburizing
dianqi
- 火卷帘是一种适用于建筑物较大洞口处的防火、隔热设施,产品在设计上采用了卷轴内藏的特点，具有结构合理紧凑。防火卷帘帘面通过传动装置和控制系统达到卷帘的升降。起到防火、隔火作用,产品外形平整美观、造型新颖,钢性强。防火卷帘门广泛应用于工业与民用建筑的防火隔断区，能有效地阻止火势蔓延，保障生命财产安全，是现代建筑中不可缺少的防火设施。-Fire shutter is a suitable building large hole at the fire, heat insulation, the pro
gangtiediaodufangfa
- 基于综合数据来源的钢铁能源的自动优化调度系统及方法.-Based on comprehensive data source steel automatic optimization of the energy system and method dispatch.
ranqigongxuyuce
- 一种钢铁企业燃气供需动态预测系统及方法能源管控-One kind of iron and steel enterprises gas supply system and method for dynamic prediction
Steel-structure-production-flow
- 某公司钢结构的生产流程等资料，个人认为可以一看，多多交流。-Steel production process of a company, etc. I personally think that one can see, a lot of communication.
Elastic-modulubearing-capacit
- 钢管混凝土的复合弹性模量及承载力试验研究-Elastic modulus of composite steel and concrete experimental study bearing capacity
35mmSS1401A10A
- 山社35mm二相步进电机SS1401A10A采用永磁硅钢片及日本NSK原装轴承制造，低碳环保，产品均通过质量环保认证。-Mountain Club SS1401A10A 35mm two-phase stepper motor with permanent magnet silicon steel and original Japanese NSK Bearings manufacturing, low-carbon environment, the quality of products th
42mmSS1702A10A
- 山社42mm二相步进电机型号有：SS1702A10A、SS1703A15A、SS1704A20A，采用永磁硅钢片及日本NSK原装轴承制造，低碳环保，力矩从：0.262N.m-0.54N.m,定位精度高，输出力矩高，响应频率高，运行噪音低，动态特性好，产品均通过质量环保认证。-Hill Community 42mm two-phase stepper motor models: SS1702A10A, SS1703A15A, SS1704A20A, silicon steel and perman
cailiaoyonglaingbilifenxijisuanshu
- 预拌混凝土使用量/6层以上建筑主筋使用HRB400级钢筋比例计算/可循环材料使用比例计算-Use ready-mixed concrete volume, 6 floors above the building using HRB400 steel reinforcement ratio calculation, the ratio is calculated using recycled materials
steel
- 钢结构编码，用于工厂钢结构领域，多种编码形式，收集了大部分的常用方式-Steel structure code, used in steel structure factory areas, a variety of encoding, collected the most commonly used way