stem seal
常见例句
- Describing several structures of stem seal and existent problems.
闡述了閥杆密封的幾種結搆及存在的問題。 - The backup seal is secondary to the main stem seal assembly (20) in the bonnet (12).
備用密封件是閥帽（12）內主閥杆密封組件（20） 的二級密封。
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.
電站鍋爐給水調節閥的閥杆密封採用柔性石墨填料，既降低了摩擦力，又爲調節閥的運行節約了能源。 返回 stem seal