1·The structural characteristic and machining method of runner blade servomotor piston ring for large Kaplan turbine are studied.
对大型轴流转桨式水轮机转轮接力器活塞环的结构特点及加工方法进行了研究分析。
2·The fluid pressure auto resuming middle jar and an assistance Servomotor use the identical piston and the identical cylinder together.
液压自动复中缸与辅助接力器共用同一活塞和同一缸体。