stem seal
常见例句
- Describing several structures of stem seal and existent problems.
阐述了阀杆密封的几种结构及存在的问题。 - The backup seal is secondary to the main stem seal assembly (20) in the bonnet (12).
备用密封件是阀帽（12）内主阀杆密封组件（20） 的二级密封。
ip.com - The stem seal of a feed water control valve uses expanded graphite packing in order to produce friction and to economize on energy for the control valve working.
电站锅炉给水调节阀的阀杆密封采用柔性石墨填料，既降低了摩擦力，又为调节阀的运行节约了能源。 返回 stem seal