piston ring seal meaning in Chinese

活塞环式密封
胀圈密封

The formula and analysis would be helpful for the theoretical analysis and engineering design of the hydraulic cylinder piston ring seal structure
研究结果为控制棒水压驱动机构水压缸活塞环密封结构的设计和分析提供了理论基础。
According to the control rod hydraulic drive mechanism ( crhdm ) and the characteristics of its hydraulic cylinder seal structure , the leaking ways of the hydraulic cylinder piston ring seal were analysed , its theoretical calculation model was built and its flow resistance formula based on the calculation model of differential pressure at the hydraulic cylinder piston ring seal was deduced
摘要根据控制棒水压驱动机构水压缸活塞环密封结构的特点，分析了水压缸活塞环的泄漏途径，建立了活塞环密封泄漏流阻的理论计算模型，并结合水压缸活塞环密封处的压差计算模型，推导出水压缸密封结构的流阻计算公式。