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佳木斯大学本科毕业论文（设计）AbstractConnecting Rod is an important power mechanism of engine,which takes on the importanttask of converting heat energy into mechanical energy,and...

2.5管程结构初步设计.82.6壳程换热系数计算92.7传热系数的计算92.8管壁的温度计算102.9管程压降计算102.10壳程压降计算.11第三章加热器的结构设计及强度运算123.1加热管的材料及规格的选择和数...

北京理工大学珠海学院2020届本科生毕业设计AbstractWith the development of the domestic economy,the market for small yachts has becomeactive,especially in coastal areas.The demand for...

本科论文4.1.1主轴的设计444494.1.2主轴的强度校核..214.1.3键的强度校核234.1.4主轴的临界转速244.2刀具的平衡计算274.3篦条的计算与设计.304.4轴承计算与选择31结论34参考文献35致谢.37

南通职业大学毕业设计（论文）摆线针轮减速器运动仿真AbstractThe reducer is a key transmission component used in the mechanical field,with thecharacteristics of high transmission effi...

魏氏体组织和珠光体组织。铜与钢的结合界面出现平面结晶带，钛铜结合界面边界附近区域颗粒的尺寸偏小，但密度较大，外部的颗粒尺寸较大且分布稀疏通过对模拟温度场发现，等离子焊过程中温度上升...

AbstractAt present,the car has become an important traffic tool in people's lives.In orderto control automobile exhaust pollution,protect human survival environment,countries aroun...

究集中在退火、淬火、回火、淬透性、脱碳等方面，目前比较热点的研究方向是优化现有的热处理工艺（如采用QI-QT工艺和淬火-分配工艺），同时应用形变热处理、感应热处理和在线热处理等新技术来达...

AbstractThe main function of the upper half of the front bearing seat is to maintain the position ofthe bearing,as a support for the load,to prevent external material from invading...