back prop

• 后支柱,后撑

back prop的用法和样例：

例句

1. The fatigue fracture reason of the weld seam at the back supporting rod of the main reductor of an aircraft has been analyzed by fractography and metallographic test.
   对某飞机主减速器后撑杆焊缝疲劳断裂原因作了分析。