您要查找的是不是：
- O型圈表面密封配件Fitting - O-Ring Face Seal
- O型圈的原子氧剥蚀效应实验研究Experimental Study of Effect of Atomic Oxygen Erosion on Rubber O-ring
- 带附加V型圈的毛毡密封件Felt seals with additional V-ring
- 配件fittings
- 表面outside
- 密封配件seal fitting
- 表面密封剂surface sealer
- 表面的ostensible
- 一个非常漂亮的回型圈上他转向一个什么方向。He was going somewhere at a pretty good clip.
- 表面上on the surface
- 笔型pen type
- 表面处理superficial treatment
- 本阀阀杆密封分为两种形式：一为填料密封；一为O型密封环密封。It has two stem sealing:one is stuffing box and another is toroidal sealing ring (O-ring).
- 钥匙圈key ring
- 摩托车配件motorcycle accessories
- 表面活性剂surface active agent
- 整型integer
- 内圈inside track
- 汽车配件auto parts
- 表面上的lip-deep
