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...

或固有缺陷构成的[5]。对管道的外层装涂以及电化学保护是提升埋地管道抗腐蚀性的主要方法。但是，这个方法通常存在一个缺陷一如果涂层装涂不当或与管道不适配，那么电化学保护层的防护能力就会...

AbstractLightning disaster seriously affects people's normal life,from the damage offacilities to the occurrence of large-scale blackout accidents,so the prevention oflightning dis...

Research On The Efficiency Improvement Method Of30KW Wind Turbine[Abstract]Wind power has gradually become an important component inthe current power generation system.Through more...