本文提出了特大型剖分调心滚子轴承原加工工艺流程的不足，并对其进行了调整和改进，分析了加工过程中的难点，并提出了解决方案。“,”T......

时速350 km动车组用车轴成品探伤检查时发现75根车轴中有17根车轴轴身存在超标缺陷,缺陷为Φ3 mm平底孔当量单个缺陷。选取车轴进......

Culebra12D是Culebra区块的一口大位移定向井,二开井段为Φ406.4mm大尺寸长裸眼大位移井段,由于大尺寸井钻速与排量不匹配,导致岩......

The paper describes a mathematical model of the stress-strain state of polymer composite materials in the pultrusion pro......

Roundabouts in United States and other countries have been proved to be very successful, effective, and a safe traffic c......