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This is The French Laundry's vacuum sealing system.
这是法国洗衣房的真空密封系统。
Labyrinth seal and piston ring provide a dual sealing system, keeping oil clean and reducing wear.
曲径汽封和活塞环提供了双密封系统，使油保持洁净并减少磨损。
The polished rod also forms part of the sealing system between the tubing and the atmospere in the stuffing box.
光杆还成为在油管与盘根盒空间之间的密封系统的组成部分。
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