您要查找的是不是：
- 屬-非金屬雙O型環密封metal O-ring and nonmetallic O-ring seal; metallic-nonmetallic O-ring seal
- 金屬-非金屬雙O型環密封metal O-ring and nonmetallic O-ring seal
- 橡膠雙O型環密封double O-ring rubber seal
- 本閥閥桿密封分為兩種形式：一為填料密封；一為O型密封環密封。It has two stem sealing:one is stuffing box and another is toroidal sealing ring (O-ring).
- 雙pair
- 密封墊和o型環是由人造橡膠製成的。Gaskets and O rings are made of elastomers.
- 屬genus
- 黃銅灰塵罩,帶O形環密封和橡膠系鏈Brass dust cap with O-ring seal and rubber tether
- 雙擊double-click
- 雙O形圈自緊式密封結構的分析與設計Analysis and Design of Self-energizing Sealing Devices with Double O-Rings
- 屬的generic
- 雙語diglossia
- 外型exterior
- 雙流環密封double-flow sealing structure
- 雙贏Win-win
- 戶型house type
- 圓環traffic circle
- 雙色two-tone color
- 機械浮環密封mechanical floating ring seal
- 雙線crewel
