常見例句雙語例句According to the international informations and Santana engine, the seal mechanism and effective factors of valve stem oil seal is analyzed in this paper.本文根據國外資料并結合桑塔納汽車發(fā)動機,分析了氣門桿油封的密封性機理及影響因素。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(jié)閥的閥桿密封采用柔性石墨填料,既降低了摩擦力,又為調節(jié)閥的運行節(jié)約了能源。Download-type valve stem, set down with a sealing gasket sealing structure, sealed down with the media in the valve sealing force increases with increasing pressure to ensure that the valve stem seal.閥桿采用下裝式、設置帶有密封墊片的倒密封結構,倒密封的密封力隨閥腔介質壓力的增高而增大,從而確保閥桿的密封效果。 返回 stem seal valve