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Morphology and electrical contact properties of electrical connection materials in corrosive atmosphereZhi-Gang Kong,Liang-Jun XuResearch Laboratory of Electrical Contacts,Beijing University of Posts and Telecommunications摘 要:The impact mechanism of environmental factors, such as corrosive atmosphere, on connector materials was investigated......
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石油钻铤螺纹联接失效的机理分析 喻晨1,曹里民1,张焱1,施太和2,吴爽1,刘坤芳1,余雷1 (1.辽河石油勘探局工程技术研究院,辽宁盘锦 124011;2.西南石油学院石油工程系,四川南充 637001) 摘要:总结和讨论了钻铤螺纹联接失效的类型和失效机理,指出了现场施工中可能存在的潜在因素.还明确指出了FH型,IF型接头之所以要淘汰的原因,建议国内各油田尽力推广使用数字型NC接头. 关键词:石油钻铤; 联接强度; 失效类型; 失效机理; threaded connection; connection intention; failure type; failure mechanism; [全文内容正在添加中] ......
bridge was optimized through adjusting the connection stiffness and ultimate bearing capacity of locking dowel. The results show that the seismic performance of irregular continuous bridge can be significantly improved by setting the locking dowel between its main beam and sliding piers, but the low pier undertakes more seismic load. Adjusting the connection stiffness and ultimate bearing capacity......
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Stabilization Mechanism of Calcium Lignosulphonate Used in Expansion Sensitive Soil吴大江1,佘伟1,WEI Luansu1,ZUO Wenqiang1,HU Xiangyu1,MIAO Changwen11. Jiangsu Key Laboratory for Construction Materials, Southeast University摘 要:A series of tests were performed to investigate the macroscopic properties and the stabilization mechanism of calcium lignosulphonate......
Article ID: 1003-6326(2005)06-1346-05 Anti-oxidation mechanism of SiC-B4C-C composites LIU Qi-cheng(刘其城)1,2, XU Xie-wen(徐协文)1,2, HUANG Qi-zhong(黄启忠)2, HUANG Bai-yun(黄伯云)2 (1... loss less than 1% within the temperature range from 900 to 1100℃ for 10h. Anti-oxidation mechanism was also discussed from the viewpoint of thermodynamics, excellent anti-oxidation property of materials......
rotational magnetization mechanism and Hezer’s result, we can also get the relationship of the coercive force Hc and permeability μi in connection with the grain diameter D, which are Hc?D6, μi?D-6... Microwave absorbing mechanism of soft magnetic alloy Fe85Si2Al6Cr7 WANG Zhong-you(王忠友), JIANG Jian-jun(江建军), DENG Lian-wen(邓联文), ZHANG Chuan-kun(张传坤), ZHANG Tao-qi(张韬奇) Department of Electronic......
Hydration Mechanism of Cement-based Materials with Different Si-rich Mineral Admixtures何真1,2,胡玲玲1,21. State Key Laboratory of Water Resources & Hydropower Engineering Science, Wuhan University2. School of Water Resources and Hydropower Engineering, Wuhan University摘 要:Early hydration mechanism of cement-based materials with silica fume, nano-SiO2......