Shelf spring of railway truck bears greater dynamic or impacting loading at work and it is one of the key parts which determines the train safe operation. 铁路货车枕架弹簧在工作中承受较大的动载荷或冲击载荷,是决定列车安全运行的关键零件之一。
Conclusion Pemberton acetabuloplasty 、 reversing shelf operation and salter osteotomy are all effective procedures for the treatment of DDH. 结论Salter骨盆截骨术、Pemberton髋臼成形术的疗效优于髋臼造盖术;
Conclusion The hip shelf arthroplasty can reduce the stress on the acetabulum and the head of femur, which will make the hip joint withstand the normal stress after the operation for the adult acetabular dysplasia. 结论髋臼翻转造盖术可明显改善髋臼局部受力情况,使成人髋臼发育不良术后髋关节受力趋于正常。
New Shelf Operation in Treating Congenital Dislocation of Hip Joint in Children 新型造盖术治疗儿童髋关节脱位
Treatment of Congenital Dysplasia of Acetabulum with Turn-over Shelf Operation on the Upper Margin of Acetabulum 髋臼上缘翻转造盖术治疗先天性髋臼发育不良
According to the shelf "gently under heavy", goods" unloading time at least "unloading principles established the mathematical model, genetic algorithm used to optimize allocation way of position, shelves stability and operation time less the optimum combination have been realized. 根据货架上轻下重、货物出入库时间最少等出入库原则建立数学模型,使用遗传算法对货位分配方式进行优化,实现货架稳定与作业时间少的优化组合。