stem seal

常见例句

雙語例句

• 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。
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• 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。
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